{
  "manageEntity": {
    "action": "Save",
    "entityId": "1993327439",
    "entityType": "Track",
    "nonce": "0xc0115249d8ffd51e7872b538f5888684e22f0a6ad5fd25fe35177f2aebe229fc",
    "signature": "0x34423e2f1b918b70f0ae75b95b085673cf37a9636fbaec685ea8198ff36b39133970d05e10d43840b37a0edf793f0be8d45c11de98272641b378d0808fadec7c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}