{
  "manageEntity": {
    "action": "Save",
    "entityId": "2054690363",
    "entityType": "Track",
    "nonce": "0xee06354992a63d1fb92a88673b0a5e5ac9c0a081fae4a3f1db4cdaf2355c39c4",
    "signature": "0x94ce012d09a9902ea370fc0fa8cd6367876d85a58e28e6dd3e09b98810e30232000629458dc77d257bf76ab3ce4d98175e9314481e878a48e637d7e910929fba1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}