{
  "manageEntity": {
    "action": "Save",
    "entityId": "692736325",
    "entityType": "Track",
    "nonce": "0xb6a08e58ceb13182166b97deb2cbda6ea13a854eea3f47d2ebd9930703ee89e5",
    "signature": "0x34c9b252f4c07978988de94e8fc41c54860a21763a4c74274d8db7652b4902e51e61f0fe8a40213aa67bac3b2917d7a28042fb7070ba3b963cec3726cdac640c1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}