docs: def _prepPayload(self, record):
          """
          record: generated from logger module
          This preps the payload to be formatted in whatever content-type is
          expected from the RESTful API.
  
          returns: a tuple of the data and the http content-type
          """
          payload = self._getPayload(record)
          json_data = json.dumps(payload, default=serialize)
  
          return {
              'json': (json_data, 'application/json')
          }.get(self.content_type, (json_data, 'text/plain'))