{
  "manageEntity": {
    "action": "Save",
    "entityId": "222069956",
    "entityType": "Track",
    "nonce": "0x59bccfcf0f780cf8f31578e38c5b3cf93c268632efbd8ab9ee2ebc32820ad064",
    "signature": "0x965d67e532f3e27bee4a46bb60d8050b027c8ace5246146412651054f74da9e162ac1633778a53d91de3e4c3555ab75cbfe5ebe8e2574995a49df3aede6b92be1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}