Update sdk/basyx/aas/adapter/json/json_serialization.py

Co-authored-by: Igor Garmaev <56840636+zrgt@users.noreply.github.com>

Author: s-heppner

sdk/basyx/aas/adapter/json/json_serialization.py

@@ -642,6 +642,11 @@ def _entity_to_json(cls, obj: model.Entity) -> Dict[str, object]:
         if obj.global_asset_id:
             data['globalAssetId'] = obj.global_asset_id
         if obj.specific_asset_id:
+        if obj.entity_type is not None:
+            data['entityType'] = _generic.ENTITY_TYPES[obj.entity_type]
+        if obj.global_asset_id is not None:
+            data['globalAssetId'] = obj.global_asset_id
+        if obj.specific_asset_id is not None:
             data['specificAssetIds'] = list(obj.specific_asset_id)
         return data