{
  "manageEntity": {
    "action": "Save",
    "entityId": "1036582541",
    "entityType": "Track",
    "nonce": "0x6b516e520fbb1cf4e2f1bc22461ddf9eb40a18fe1c4a5cff6c52f647bf8afa56",
    "signature": "0x21306edcb1e3184a85650561f74b448759bb74142664ea14899b1da0138ec35b54606693397e3b153e374a0853b5115c2fcebb180c4e03386adc6d2c4fc35d0d1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}