add extra fields

bittensor/core/chain_data/info_base.py

@@ -1,4 +1,4 @@
-from dataclasses import dataclass
+from dataclasses import dataclass, fields
 from typing import Any, TypeVar
 
 from bittensor.core.errors import SubstrateRequestException
@@ -13,7 +13,13 @@ class InfoBase:
     @classmethod
     def from_dict(cls, decoded: dict) -> T:
         try:
-            return cls._from_dict(decoded)
+            class_fields = {f.name for f in fields(cls)}
+            extra_keys = decoded.keys() - class_fields
+            instance = cls._from_dict(
+                {k: v for k, v in decoded.items() if k in class_fields}
+            )
+            [setattr(instance, k, decoded[k]) for k in extra_keys]
+            return instance
         except KeyError as e:
             raise SubstrateRequestException(
                 f"The {cls} structure is missing {e} from the chain.",