docs: def get_subject_without_validation(jwt_bu64):
      """Extract subject from the JWT without validating the JWT.
  
      - The extracted subject cannot be trusted for authn or authz.
  
      Args:
        jwt_bu64: bytes
          JWT, encoded using a a URL safe flavor of Base64.
  
      Returns:
        str: The subject contained in the JWT.
  
      """
      try:
          jwt_dict = get_jwt_dict(jwt_bu64)
      except JwtException as e:
          return log_jwt_bu64_info(logging.error, str(e), jwt_bu64)
      try:
          return jwt_dict['sub']
      except LookupError:
          log_jwt_dict_info(logging.error, 'Missing "sub" key', jwt_dict)