diff --git a/lib/python/flame/examples/adult/aggregator/config.json b/lib/python/flame/examples/adult/aggregator/config.json
index 66d6b2ab8..0b8a35fa6 100644
--- a/lib/python/flame/examples/adult/aggregator/config.json
+++ b/lib/python/flame/examples/adult/aggregator/config.json
@@ -21,9 +21,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "aggregator": ["distribute", "aggregate"],
-                "trainer": ["fetch", "upload"]
+            "funcTags": {
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -33,20 +39,22 @@
         "rounds": 5
     },
     "baseModel": {
-	"name": "",
-	"version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	"id": "622a358619ab59012eabeefb",
-	"name": "adult"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "adult"
     },
     "registry": {
-	"sort": "mlflow",
-	"uri": "http://flame-mlflow:5000"
+        "sort": "mlflow",
+        "uri": "http://flame-mlflow:5000"
     },
     "selector": {
-	"sort": "random",
-	"kwargs": {"k": 1}
+        "sort": "random",
+        "kwargs": {
+            "k": 1
+        }
     },
     "maxRunTime": 300,
     "realm": "",
diff --git a/lib/python/flame/examples/adult/trainer/config.json b/lib/python/flame/examples/adult/trainer/config.json
index 23f6603c4..2eb0fe726 100644
--- a/lib/python/flame/examples/adult/trainer/config.json
+++ b/lib/python/flame/examples/adult/trainer/config.json
@@ -21,9 +21,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "aggregator": ["distribute", "aggregate"],
-                "trainer": ["fetch", "upload"]
+            "funcTags": {
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -37,20 +43,22 @@
         "rounds": 5
     },
     "baseModel": {
-	"name": "",
-	"version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	"id": "622a358619ab59012eabeefb",
-	"name": "adult"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "adult"
     },
     "registry": {
-	"sort": "mlflow",
-	"uri": "http://flame-mlflow:5000"
+        "sort": "mlflow",
+        "uri": "http://flame-mlflow:5000"
     },
     "selector": {
-	"sort": "random",
-	"kwargs": {"k": 1}
+        "sort": "random",
+        "kwargs": {
+            "k": 1
+        }
     },
     "maxRunTime": 300,
     "realm": "default/us/west",
diff --git a/lib/python/flame/examples/dist_mnist/trainer/config1.json b/lib/python/flame/examples/dist_mnist/trainer/config1.json
index dbdcba115..29b257293 100644
--- a/lib/python/flame/examples/dist_mnist/trainer/config1.json
+++ b/lib/python/flame/examples/dist_mnist/trainer/config1.json
@@ -26,8 +26,10 @@
                 "trainer",
                 "trainer"
             ],
-	    "funcTags": {
-                "trainer": ["ring_allreduce"]
+            "funcTags": {
+                "trainer": [
+                    "ring_allreduce"
+                ]
             }
         }
     ],
@@ -41,20 +43,20 @@
         "rounds": 10
     },
     "baseModel": {
-	    "name": "",
-	    "version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	    "id": "622a358619ab59012eabeefb",
-	    "name": "dist_mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "dist_mnist"
     },
     "registry": {
 	"sort": "dummy",
 	"uri": ""
     },
     "selector": {
-	    "sort": "default",
-	    "kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
         "sort": "fedavg",
diff --git a/lib/python/flame/examples/dist_mnist/trainer/config2.json b/lib/python/flame/examples/dist_mnist/trainer/config2.json
index 51f9f20ce..15369288c 100644
--- a/lib/python/flame/examples/dist_mnist/trainer/config2.json
+++ b/lib/python/flame/examples/dist_mnist/trainer/config2.json
@@ -25,8 +25,10 @@
                 "trainer",
                 "trainer"
             ],
-	    "funcTags": {
-                "trainer": ["ring_allreduce"]
+            "funcTags": {
+                "trainer": [
+                    "ring_allreduce"
+                ]
             }
         }
     ],
@@ -40,20 +42,20 @@
         "rounds": 10
     },
     "baseModel": {
-	    "name": "",
-	    "version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	    "id": "622a358619ab59012eabeefb",
-	    "name": "dist_mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "dist_mnist"
     },
     "registry": {
 	"sort": "dummy",
 	"uri": ""
     },
     "selector": {
-	    "sort": "default",
-	    "kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
         "sort": "fedavg",
diff --git a/lib/python/flame/examples/dist_mnist/trainer/config3.json b/lib/python/flame/examples/dist_mnist/trainer/config3.json
index fc0803635..4907ef270 100644
--- a/lib/python/flame/examples/dist_mnist/trainer/config3.json
+++ b/lib/python/flame/examples/dist_mnist/trainer/config3.json
@@ -25,8 +25,10 @@
                 "trainer",
                 "trainer"
             ],
-	    "funcTags": {
-                "trainer": ["ring_allreduce"]
+            "funcTags": {
+                "trainer": [
+                    "ring_allreduce"
+                ]
             }
         }
     ],
@@ -40,20 +42,20 @@
         "rounds": 10
     },
     "baseModel": {
-	    "name": "",
-	    "version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	    "id": "622a358619ab59012eabeefb",
-	    "name": "dist_mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "dist_mnist"
     },
     "registry": {
 	"sort": "dummy",
 	"uri": ""
     },
     "selector": {
-	    "sort": "default",
-	    "kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
         "sort": "fedavg",
diff --git a/lib/python/flame/examples/hier_mnist/middle_aggregator/config_uk.json b/lib/python/flame/examples/hier_mnist/middle_aggregator/config_uk.json
index db3d31e6b..41848a898 100644
--- a/lib/python/flame/examples/hier_mnist/middle_aggregator/config_uk.json
+++ b/lib/python/flame/examples/hier_mnist/middle_aggregator/config_uk.json
@@ -25,28 +25,40 @@
                 "top-aggregator",
                 "middle-aggregator"
             ],
-	        "funcTags": {
-                "top-aggregator": ["distribute", "aggregate"],
-                "middle-aggregator": ["fetch", "upload"]
+            "funcTags": {
+                "top-aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "middle-aggregator": [
+                    "fetch",
+                    "upload"
+                ]
             }
         },
-		{
+        {
             "description": "Model update is sent from mid aggregator to trainer and vice-versa",
             "groupBy": {
                 "type": "tag",
                 "value": [
-		    "default/us/west/org1",
-		    "default/uk/london/org2"
-		]
+                    "default/us/west/org1",
+                    "default/uk/london/org2"
+                ]
             },
             "name": "param-channel",
             "pair": [
                 "middle-aggregator",
                 "trainer"
             ],
-	        "funcTags": {
-                "middle-aggregator": ["distribute", "aggregate"],
-                "trainer": ["fetch", "upload"]
+            "funcTags": {
+                "middle-aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -60,12 +72,12 @@
         "rounds": 5
     },
     "baseModel": {
-	"name": "",
-	"version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	"id": "622a358619ab59012eabeefb",
-	"name": "mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "mnist"
     },
     "registry": {
 	"sort": "dummy",
diff --git a/lib/python/flame/examples/hier_mnist/middle_aggregator/config_us.json b/lib/python/flame/examples/hier_mnist/middle_aggregator/config_us.json
index 02e17163e..28a6a7337 100644
--- a/lib/python/flame/examples/hier_mnist/middle_aggregator/config_us.json
+++ b/lib/python/flame/examples/hier_mnist/middle_aggregator/config_us.json
@@ -25,28 +25,40 @@
                 "top-aggregator",
                 "middle-aggregator"
             ],
-	        "funcTags": {
-                "top-aggregator": ["distribute", "aggregate"],
-                "middle-aggregator": ["fetch", "upload"]
+            "funcTags": {
+                "top-aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "middle-aggregator": [
+                    "fetch",
+                    "upload"
+                ]
             }
         },
-		{
+        {
             "description": "Model update is sent from mid aggregator to trainer and vice-versa",
             "groupBy": {
                 "type": "tag",
                 "value": [
-		    "default/us/west/org1",
-		    "default/uk/london/org2"
-		]
+                    "default/us/west/org1",
+                    "default/uk/london/org2"
+                ]
             },
             "name": "param-channel",
             "pair": [
                 "middle-aggregator",
                 "trainer"
             ],
-	        "funcTags": {
-                "middle-aggregator": ["distribute", "aggregate"],
-                "trainer": ["fetch", "upload"]
+            "funcTags": {
+                "middle-aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -60,12 +72,12 @@
         "rounds": 5
     },
     "baseModel": {
-	"name": "",
-	"version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	"id": "622a358619ab59012eabeefb",
-	"name": "mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "mnist"
     },
     "registry": {
 	"sort": "dummy",
diff --git a/lib/python/flame/examples/hier_mnist/top_aggregator/config.json b/lib/python/flame/examples/hier_mnist/top_aggregator/config.json
index 3dcf24010..22309ffad 100644
--- a/lib/python/flame/examples/hier_mnist/top_aggregator/config.json
+++ b/lib/python/flame/examples/hier_mnist/top_aggregator/config.json
@@ -25,9 +25,15 @@
                 "top-aggregator",
                 "middle-aggregator"
             ],
-	        "funcTags": {
-                "top-aggregator": ["distribute", "aggregate"],
-                "middle-aggregator": ["fetch", "upload"]
+            "funcTags": {
+                "top-aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "middle-aggregator": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -41,20 +47,20 @@
         "rounds": 5
     },
     "baseModel": {
-	"name": "",
-	"version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	"id": "622a358619ab59012eabeefb",
-	"name": "mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "mnist"
     },
     "registry": {
 	"sort": "dummy",
 	"uri": "http://flame-mlflow:5000"
     },
     "selector": {
-	"sort": "default",
-	"kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "maxRunTime": 300,
     "realm": "",
diff --git a/lib/python/flame/examples/hier_mnist/trainer/config_uk.json b/lib/python/flame/examples/hier_mnist/trainer/config_uk.json
index b52b3aa6c..c9bee1d56 100644
--- a/lib/python/flame/examples/hier_mnist/trainer/config_uk.json
+++ b/lib/python/flame/examples/hier_mnist/trainer/config_uk.json
@@ -12,23 +12,29 @@
         }
     ],
     "channels": [
-		{
+        {
             "description": "Model update is sent from mid aggregator to trainer and vice-versa",
             "groupBy": {
                 "type": "tag",
                 "value": [
-		    "default/us/west/org1",
-		    "default/uk/london/org2"
-				]
+                    "default/us/west/org1",
+                    "default/uk/london/org2"
+                ]
             },
             "name": "param-channel",
             "pair": [
                 "middle-aggregator",
                 "trainer"
             ],
-	        "funcTags": {
-                "middle-aggregator": ["distribute", "aggregate"],
-                "trainer": ["fetch", "upload"]
+            "funcTags": {
+                "middle-aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -42,12 +48,12 @@
         "rounds": 5
     },
     "baseModel": {
-	"name": "",
-	"version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	"id": "622a358619ab59012eabeefb",
-	"name": "mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "mnist"
     },
     "registry": {
 	"sort": "dummy",
diff --git a/lib/python/flame/examples/hier_mnist/trainer/config_us.json b/lib/python/flame/examples/hier_mnist/trainer/config_us.json
index 9fb50e04e..480db4364 100644
--- a/lib/python/flame/examples/hier_mnist/trainer/config_us.json
+++ b/lib/python/flame/examples/hier_mnist/trainer/config_us.json
@@ -12,23 +12,29 @@
         }
     ],
     "channels": [
-		{
+        {
             "description": "Model update is sent from mid aggregator to trainer and vice-versa",
             "groupBy": {
                 "type": "tag",
                 "value": [
-		    "default/us/west/org1",
-		    "default/uk/london/org2"
-		]
+                    "default/us/west/org1",
+                    "default/uk/london/org2"
+                ]
             },
             "name": "param-channel",
             "pair": [
                 "middle-aggregator",
                 "trainer"
             ],
-	        "funcTags": {
-                "middle-aggregator": ["distribute", "aggregate"],
-                "trainer": ["fetch", "upload"]
+            "funcTags": {
+                "middle-aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -42,12 +48,12 @@
         "rounds": 5
     },
     "baseModel": {
-	"name": "",
-	"version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	"id": "622a358619ab59012eabeefb",
-	"name": "mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "mnist"
     },
     "registry": {
 	"sort": "dummy",
diff --git a/lib/python/flame/examples/hybrid/aggregator/config.json b/lib/python/flame/examples/hybrid/aggregator/config.json
index 0a0ef510f..7103c5baa 100644
--- a/lib/python/flame/examples/hybrid/aggregator/config.json
+++ b/lib/python/flame/examples/hybrid/aggregator/config.json
@@ -25,9 +25,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "trainer": ["fetch", "upload"],
-                "aggregator": ["distribute", "aggregate"]
+            "funcTags": {
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ],
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ]
             }
         }
     ],
@@ -41,20 +47,20 @@
         "rounds": 5
     },
     "baseModel": {
-	    "name": "",
-	    "version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	    "id": "622a358619ab59012eabeefc",
-	    "name": "hybrid_mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefc",
+        "name": "hybrid_mnist"
     },
     "registry": {
-	    "sort": "dummy",
-	    "uri": ""
+        "sort": "dummy",
+        "uri": ""
     },
     "selector": {
-	    "sort": "default",
-	    "kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
         "sort": "fedavg",
diff --git a/lib/python/flame/examples/hybrid/trainer/config_eu_org1.json b/lib/python/flame/examples/hybrid/trainer/config_eu_org1.json
index 8d29caf61..6a8b718fa 100644
--- a/lib/python/flame/examples/hybrid/trainer/config_eu_org1.json
+++ b/lib/python/flame/examples/hybrid/trainer/config_eu_org1.json
@@ -26,8 +26,10 @@
                 "trainer",
                 "trainer"
             ],
-	    "funcTags": {
-                "trainer": ["ring_allreduce"]
+            "funcTags": {
+                "trainer": [
+                    "ring_allreduce"
+                ]
             }
         },
         {
@@ -43,9 +45,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "trainer": ["fetch", "upload"],
-                "aggregator": ["distribute", "aggregate"]
+            "funcTags": {
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ],
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ]
             }
         }
     ],
@@ -59,20 +67,20 @@
         "rounds": 5
     },
     "baseModel": {
-	    "name": "",
-	    "version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	    "id": "622a358619ab59012eabeefc",
-	    "name": "hybrid_mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefc",
+        "name": "hybrid_mnist"
     },
     "registry": {
-	    "sort": "dummy",
-	    "uri": ""
+        "sort": "dummy",
+        "uri": ""
     },
     "selector": {
-	    "sort": "default",
-	    "kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
         "sort": "fedavg",
diff --git a/lib/python/flame/examples/hybrid/trainer/config_eu_org2.json b/lib/python/flame/examples/hybrid/trainer/config_eu_org2.json
index ccf3c7cec..5ca84614b 100644
--- a/lib/python/flame/examples/hybrid/trainer/config_eu_org2.json
+++ b/lib/python/flame/examples/hybrid/trainer/config_eu_org2.json
@@ -26,8 +26,10 @@
                 "trainer",
                 "trainer"
             ],
-	    "funcTags": {
-                "trainer": ["ring_allreduce"]
+            "funcTags": {
+                "trainer": [
+                    "ring_allreduce"
+                ]
             }
         },
         {
@@ -43,9 +45,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "trainer": ["fetch", "upload"],
-                "aggregator": ["distribute", "aggregate"]
+            "funcTags": {
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ],
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ]
             }
         }
     ],
@@ -59,20 +67,20 @@
         "rounds": 5
     },
     "baseModel": {
-	    "name": "",
-	    "version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	    "id": "622a358619ab59012eabeefc",
-	    "name": "hybrid_mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefc",
+        "name": "hybrid_mnist"
     },
     "registry": {
-	    "sort": "dummy",
-	    "uri": ""
+        "sort": "dummy",
+        "uri": ""
     },
     "selector": {
-	    "sort": "default",
-	    "kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
         "sort": "fedavg",
diff --git a/lib/python/flame/examples/hybrid/trainer/config_us_org1.json b/lib/python/flame/examples/hybrid/trainer/config_us_org1.json
index b80aa1b23..fd616c6b6 100644
--- a/lib/python/flame/examples/hybrid/trainer/config_us_org1.json
+++ b/lib/python/flame/examples/hybrid/trainer/config_us_org1.json
@@ -26,8 +26,10 @@
                 "trainer",
                 "trainer"
             ],
-	    "funcTags": {
-                "trainer": ["ring_allreduce"]
+            "funcTags": {
+                "trainer": [
+                    "ring_allreduce"
+                ]
             }
         },
         {
@@ -43,9 +45,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "trainer": ["fetch", "upload"],
-                "aggregator": ["distribute", "aggregate"]
+            "funcTags": {
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ],
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ]
             }
         }
     ],
@@ -59,20 +67,20 @@
         "rounds": 5
     },
     "baseModel": {
-	    "name": "",
-	    "version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	    "id": "622a358619ab59012eabeefc",
-	    "name": "hybrid_mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefc",
+        "name": "hybrid_mnist"
     },
     "registry": {
-	    "sort": "dummy",
-	    "uri": ""
+        "sort": "dummy",
+        "uri": ""
     },
     "selector": {
-	    "sort": "default",
-	    "kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
         "sort": "fedavg",
diff --git a/lib/python/flame/examples/hybrid/trainer/config_us_org2.json b/lib/python/flame/examples/hybrid/trainer/config_us_org2.json
index 44a7c1f03..27c538182 100644
--- a/lib/python/flame/examples/hybrid/trainer/config_us_org2.json
+++ b/lib/python/flame/examples/hybrid/trainer/config_us_org2.json
@@ -26,8 +26,10 @@
                 "trainer",
                 "trainer"
             ],
-	    "funcTags": {
-                "trainer": ["ring_allreduce"]
+            "funcTags": {
+                "trainer": [
+                    "ring_allreduce"
+                ]
             }
         },
         {
@@ -43,9 +45,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "trainer": ["fetch", "upload"],
-                "aggregator": ["distribute", "aggregate"]
+            "funcTags": {
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ],
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ]
             }
         }
     ],
@@ -59,20 +67,20 @@
         "rounds": 5
     },
     "baseModel": {
-	    "name": "",
-	    "version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	    "id": "622a358619ab59012eabeefc",
-	    "name": "hybrid_mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefc",
+        "name": "hybrid_mnist"
     },
     "registry": {
-	    "sort": "dummy",
-	    "uri": ""
+        "sort": "dummy",
+        "uri": ""
     },
     "selector": {
-	    "sort": "default",
-	    "kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
         "sort": "fedavg",
diff --git a/lib/python/flame/examples/medmnist/aggregator/config.json b/lib/python/flame/examples/medmnist/aggregator/config.json
index 89e5d9158..54d1ece3f 100644
--- a/lib/python/flame/examples/medmnist/aggregator/config.json
+++ b/lib/python/flame/examples/medmnist/aggregator/config.json
@@ -21,9 +21,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "aggregator": ["distribute", "aggregate"],
-                "trainer": ["fetch", "upload"]
+            "funcTags": {
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -35,27 +41,27 @@
         "batchSize": 32,
         "learningRate": 0.001,
         "rounds": 5,
-		"epochs": 2
+        "epochs": 2
     },
     "baseModel": {
-	"name": "",
-	"version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	"id": "622a358619ab59012eabeefb",
-	"name": "mednist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "mednist"
     },
     "registry": {
-	"sort": "dummy",
-	"uri": ""
+        "sort": "dummy",
+        "uri": ""
     },
     "selector": {
-	"sort": "default",
-	"kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
-    "sort": "fedavg",
-    "kwargs": {}
+        "sort": "fedavg",
+        "kwargs": {}
     },
     "maxRunTime": 300,
     "realm": "default",
diff --git a/lib/python/flame/examples/medmnist/trainer/config.json b/lib/python/flame/examples/medmnist/trainer/config.json
index 3a4dd7c7c..503e66a1b 100644
--- a/lib/python/flame/examples/medmnist/trainer/config.json
+++ b/lib/python/flame/examples/medmnist/trainer/config.json
@@ -21,9 +21,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "aggregator": ["distribute", "aggregate"],
-                "trainer": ["fetch", "upload"]
+            "funcTags": {
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -35,27 +41,27 @@
         "batchSize": 32,
         "learningRate": 0.001,
         "rounds": 5,
-		"epochs": 2
+        "epochs": 2
     },
     "baseModel": {
-	"name": "",
-	"version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	"id": "622a358619ab59012eabeefb",
-	"name": "mednist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "mednist"
     },
     "registry": {
-	"sort": "dummy",
-	"uri": ""
+        "sort": "dummy",
+        "uri": ""
     },
     "selector": {
-	"sort": "default",
-	"kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
-    "sort": "fedavg",
-    "kwargs": {}
+        "sort": "fedavg",
+        "kwargs": {}
     },
     "maxRunTime": 300,
     "realm": "default",
diff --git a/lib/python/flame/examples/mnist/aggregator/config.json b/lib/python/flame/examples/mnist/aggregator/config.json
index ac8efe28f..3a464705f 100644
--- a/lib/python/flame/examples/mnist/aggregator/config.json
+++ b/lib/python/flame/examples/mnist/aggregator/config.json
@@ -25,9 +25,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "aggregator": ["distribute", "aggregate"],
-                "trainer": ["fetch", "upload"]
+            "funcTags": {
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -41,20 +47,20 @@
         "rounds": 20
     },
     "baseModel": {
-	    "name": "",
-	    "version": 2
+        "name": "",
+        "version": 2
     },
-    "job" : {
-	    "id": "622a358619ab59012eabeefb",
-	    "name": "mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "mnist"
     },
     "registry": {
-	    "sort": "dummy",
-	    "uri": ""
+        "sort": "dummy",
+        "uri": ""
     },
     "selector": {
-	    "sort": "default",
-	    "kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
         "sort": "fedavg",
diff --git a/lib/python/flame/examples/mnist/trainer/config.json b/lib/python/flame/examples/mnist/trainer/config.json
index c640681cd..77bc1d0a5 100644
--- a/lib/python/flame/examples/mnist/trainer/config.json
+++ b/lib/python/flame/examples/mnist/trainer/config.json
@@ -25,9 +25,15 @@
                 "trainer",
                 "aggregator"
             ],
-	    "funcTags": {
-                "aggregator": ["distribute", "aggregate"],
-                "trainer": ["fetch", "upload"]
+            "funcTags": {
+                "aggregator": [
+                    "distribute",
+                    "aggregate"
+                ],
+                "trainer": [
+                    "fetch",
+                    "upload"
+                ]
             }
         }
     ],
@@ -41,20 +47,20 @@
         "rounds": 5
     },
     "baseModel": {
-	    "name": "",
-	    "version": 1
+        "name": "",
+        "version": 1
     },
-    "job" : {
-	    "id": "622a358619ab59012eabeefb",
-	    "name": "mnist"
+    "job": {
+        "id": "622a358619ab59012eabeefb",
+        "name": "mnist"
     },
     "registry": {
-	    "sort": "dummy",
-	    "uri": ""
+        "sort": "dummy",
+        "uri": ""
     },
     "selector": {
-	    "sort": "default",
-	    "kwargs": {}
+        "sort": "default",
+        "kwargs": {}
     },
     "optimizer": {
         "sort": "fedavg",