{
  "manageEntity": {
    "action": "Save",
    "entityId": "1166209473",
    "entityType": "Track",
    "nonce": "0x0969d7b00ab5907a42b0bfe0cebb62b2f668c1f5664c917c98cc1072e2c2fa27",
    "signature": "0xbe44e96c6ea927624da6b16f6c774e524b1549a64a7d8004b10b54a18f636b243557c1960d84bcf7bd5d2c0e0bad34981d640dbbfb8a7a543389015fdc9a1e871c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}