{
  "manageEntity": {
    "action": "Save",
    "entityId": "524007876",
    "entityType": "Track",
    "nonce": "0x44026763d8990000bac42bcbb3b9dd787c6326452ae871763cd43d81bc17cd86",
    "signature": "0x10356c9f9db634925662044906cea8ff132e5d18730c826907899a4bc5d8ed89300e43ed9c96536a182bf8534a5b92ef4de63627e29d81e85ae1ee6d3161a26f1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}