{
  "manageEntity": {
    "action": "Save",
    "entityId": "1292836832",
    "entityType": "Track",
    "nonce": "0x5830ffc5419bccd994ccaa6143f1059c065484bfb6cfde201b94054205091def",
    "signature": "0x625a868eed1a5a5b54733f3d9c5b5de6c49d39830da2637007e5f0824164341a37dc094a75001905f6512d3ad5ec02259af39bdc1778a8e3e6dc30ca751a8dee1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}