diff --git a/lib/data_types.py b/lib/data_types.py
index ceadfed..c40fcc6 100644
--- a/lib/data_types.py
+++ b/lib/data_types.py
@@ -65,12 +65,12 @@ class ApiPayload(ABC):
 class AuthData:
     """data used to authenticate requester"""
 
-    signature: str
-    cost: str
     endpoint: str
-    reqnum: int
-    url: str
     request_idx: int
+    url: str
+    cost: str
+    reqnum: int
+    signature: str
 
     @classmethod
     def from_json_msg(cls, json_msg: Dict[str, Any]):