{
  "manageEntity": {
    "action": "Save",
    "entityId": "282179966",
    "entityType": "Track",
    "nonce": "0xe29a38fcae3a5bbd918edbc3bcdd2706b41bd409602f7698f1e047da07f2738b",
    "signature": "0xb302eb7890ef40feb2d65f40b1e7e8e42fa0f091312b131e220848336fdc10f86d7264a746a2a89d4054f88de44878a9138472660f060e1bb209c63f9a63041c1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}