{
  "manageEntity": {
    "action": "Save",
    "entityId": "1790666177",
    "entityType": "Track",
    "nonce": "0x8ad19389cce8fa91f1cc473bcfda40239c8fc0e55de2d1d7c3293ac38762f3b2",
    "signature": "0x01daccc97fa1385d9fcd8f75061a6fb72915fcfaf922faa049b54b479b9b79fd1aa26bcc4fbde71384c760c5ee33718626be9223b93e3c76c111d413134375961b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}