async def METHOD_NAME(self, key_id, enc_ser, ciphertext):
    """
    Decrypt and deserialize received XBR payload.
    :param key_id: The ID of the datakey the payload is encrypted with.
    :type key_id: bytes
    :param enc_ser: The serializer that was used for serializing the payload. One of ``cbor``, ``json``, ``msgpack``, ``ubjson``.
    :type enc_ser: str
    :param ciphertext: The encrypted payload to unwrap.
    :type ciphertext: bytes
    :returns: The unwrapped application payload.
    :rtype: object
    """