{
  "manageEntity": {
    "action": "Save",
    "entityId": "2078784354",
    "entityType": "Track",
    "nonce": "0x56d5047db8cc1f163fe75a77dff8bd06fe74644107aa769b0245e905f536233a",
    "signature": "0x7ae9f9da9c2a4eddc841691b8acf2f90eed7524af004490b2b2f73d0c25afd7a23f8f0a1e294bf45d01b78e8eaaaf16abeb6babdce8feb554b610306246c5c7f1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}