diff --git a/aurora/models.py b/aurora/models.py
index 77ce650..31037ec 100644
--- a/aurora/models.py
+++ b/aurora/models.py
@@ -59,8 +59,8 @@ class Moderation(BaseModel):
                     "resolved_by": result[11],
                     "resolve_reason": result[12],
                     "expired": bool(result[13]),
-                    "changes": json.loads(result[14]),
-                    "metadata": json.loads(result[15]),
+                    "changes": json.loads(result[14]) if result[14] else [],
+                    "metadata": json.loads(result[15]) if result[15] else {},
                 }
 
                 cursor.close()