Unpack payload by splitting up the raw payload into list of locator_ids
        :param argument_count: number of locator_ids in payload is equal to argument_count
        :param payload: BytesIO instance with list of concatenated locator_ids, where each locator_id is 8 bytes long

def unpack_data(cls, argument_count, payload):
        """Unpack payload by splitting up the raw payload into list of locator_ids
        :param argument_count: number of locator_ids in payload is equal to argument_count
        :param payload: BytesIO instance with list of concatenated locator_ids, where each locator_id is 8 bytes long
        """
        pl = payload.read()
        locator_ids = [pl[start:start+8] for start in range(0, len(pl), 8)]
        return locator_ids,