{
  "manageEntity": {
    "action": "Save",
    "entityId": "1732161924",
    "entityType": "Track",
    "nonce": "0xafe5abfcd1d4234e76eb2deb06ec079635a354665bb99325b3b5e83032b4c8d5",
    "signature": "0xc805492599a4ae52ddbb79ff13cfa9616528a4142a93fb165e65589daf3fdf2e5e74cd7a9d1a642ae5e5c396187e4cdd3b0e493bea6ca486e7326065ae59fa6d1b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}