fix lazy loading

app/core/models/node_storage.py

@@ -171,6 +171,16 @@ class StoredContent(AlchemyBase, AudioContentMixin):
             with open(metadata_content.filepath, 'r') as f:
                 return json.loads(f.read())
 
+    async def metadata_json_async(self, db_session):
+        metadata_cid = self.meta.get('metadata_cid')
+        if not metadata_cid:
+            return None
+        metadata_content = await StoredContent.from_cid_async(db_session, metadata_cid)
+        import aiofiles
+        async with aiofiles.open(metadata_content.filepath, 'r') as f:
+            data = await f.read()
+        return json.loads(data)
+
     @classmethod
     def from_cid(cls, db_session, content_id):
         if isinstance(content_id, str):