Decode django session data

1. Get `sessionid` from cookies
2. `select * from django_session where session_key = '<sessionid>';`
3. Check if session isn't expired using `expire_data`
4. Get user id:

        import base64
        import json

        data = json.loads(base64.b64decode(session_data).split(":", 1)[1])
        user_id = data["_auth_user_id"]