{
  "manageEntity": {
    "action": "Save",
    "entityId": "1423877711",
    "entityType": "Track",
    "nonce": "0xe0ea76d3e227e3e33a5c5e2ab35d4cc2ac447379a8176423be0f835dda950742",
    "signature": "0x7b08abf2c99e970429fc73182859f1bcfff7ee697fa2659caec6ab538038426064f45716aa6bd99b824616fe8ea0e71d8dbc55ef91e3c706ee6deca8b2b7e3a21b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}