{
  "manageEntity": {
    "action": "Save",
    "entityId": "1787023688",
    "entityType": "Track",
    "nonce": "0x60a3124130dd38dafc69bed91acdcda3045f26351962d6d42a7a7000e5855288",
    "signature": "0x05ce1d93098ff2802ce7a15c1e1867f2f89a7a400ab792636a4888829681dec8515085b03bfac765057f55e00083ff0b8f849c984d09e36d476cf847f3b2f1361c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}