feat: Implement dispatch encryption

sdk_server/models/granter_login_body.py

@@ -1,13 +1,12 @@
-# sdkserver/models/granter_login_body.py
-
 from pydantic import BaseModel
-from typing import Optional
+
 
 class GranterLoginBodyData(BaseModel):
     uid: str
     guest: bool
     token: str
 
+
 class GranterLoginBody(BaseModel):
     app_id: int
     channel_id: int