code: def set_start_date(self, start_day: int, data_limit: str, month_threshold: int):
          
          return self._connection.post('monitoring/start_date', OrderedDict((
              ('StartDay', start_day),
              ('DataLimit', data_limit),
              ('MonthThreshold', month_threshold),
              ('SetMonthData', 1)
          )))
docs: Sets network usage alarm for LTE
          :param start_day: number of day when monitoring starts
          :param data_limit: Maximal data limit as string eg.: 1000MB or 1GB and so on
          :param month_threshold: Alarm threshold in % as int number eg.: 90
          :return: dict