{
  "manageEntity": {
    "action": "Save",
    "entityId": "1787023688",
    "entityType": "Track",
    "nonce": "1792421180615419097",
    "signature": "0x4a1ebdcc2d8376806393b22c61d7b36f9f87cd01c8eccd7928a1293704dfd48b2efd9ba001868440d51b9f2d5d4614ccb3b55ab1669852201593309566dc568d1b",
    "signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
    "userId": "451691735"
  }
}