code: def update_person(self, person):
          
          self._validate_regid(person.person_id)
          self._validate_subscriber_id(person.surrogate_id)
  
          for attr in MANAGED_ATTRIBUTES:
              person.attributes.pop(attr, None)
  
          url = "/notification/v1/person/{}".format(person.person_id)
          response = NWS_DAO().putURL(
              url, self._write_headers(), self._json_body(person.json_data()))
  
          if response.status != 204:
              raise DataFailureException(url, response.status, response.data)
  
          return response.status
docs: Update an existing person
          :param person: is the updated person that the client wants to update