diff --git a/lunchable/models/transactions.py b/lunchable/models/transactions.py
index 1783914..2607712 100644
--- a/lunchable/models/transactions.py
+++ b/lunchable/models/transactions.py
@@ -308,7 +308,10 @@ def to_json(cls, x: Optional[str]) -> Optional[Dict[str, Any]]:
         """
         if x is None:
             return None
-        return pydantic_core.from_json(x)
+        elif isinstance(x, dict):
+            return x
+        else:
+            return pydantic_core.from_json(x)
 
     def get_update_object(self) -> TransactionUpdateObject:
         """