0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 +---------------+---------------+---------------+---------------+
 |                               |                               |
 |       T_PAYLOADTYPE_DATA      |             Length            |
 |                               |                               |
 +---------------+---------------+---------------+---------------+
 |                                                               |
 |                      Sender's Name TLV                        |
 |                                                               |
 +---------------+---------------+---------------+---------------+
 |                                                               |
 |                    Sender's Signature TLV                     |
 |                                                               |
 +---------------+---------------+---------------+---------------+
 |                                                               |
 |                     PT_TR_REPLY Code TLV                      |
 |                                                               |
 +---------------+---------------+---------------+---------------+