{
  "manageEntity": {
    "action": "Save",
    "entityId": "1090491992",
    "entityType": "Track",
    "nonce": "0xad13b4574182c0075fc04579a7535f4493bf5a915df251108b1f5d01ba46dc1a",
    "signature": "0x6b28c284279248e9405724923cf182b610c27a937a08b8eb939b5c8e5232cf88022499e940c31554c5d7bfefa924850d7a8e4c0026ddfc6106a3e6deefab449d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}