{
  "manageEntity": {
    "action": "Save",
    "entityId": "1699058295",
    "entityType": "Track",
    "nonce": "0x6aef83e6408302a467e808664472c79df8342cc3200ea911bd77f38f3f70b522",
    "signature": "0x954c9e3843bae78c7dd95cb6ac8e17b4d1ff9acc373b23459e1cf168c8bd0f645848795e2de9f354fe68937f1ef268c3a9f9c8d4d58d6533e79bf6b995bb26451b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}