{
  "manageEntity": {
    "action": "Save",
    "entityId": "992210163",
    "entityType": "Track",
    "nonce": "1792359021868310346",
    "signature": "0x74383dc781a796e956aa35128cf22aa69f9e6b716c60ed01607f6d2a1fb7823a25c516eb0986721eaccf4a57fae9fcbaaddb2f17884d50686ae464df44a88d8f1c",
    "signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
    "userId": "329513359"
  }
}