{
  "manageEntity": {
    "action": "Save",
    "entityId": "1022379",
    "entityType": "Track",
    "nonce": "0x0f586509b24e515dcf8bb1b54d4c6c665e8e16a8aff46582933cf94cc001d129",
    "signature": "0x9f8ae13a7522cd326903f8041c927c9fd3afa3a34e915e0fbd824aaa70ad45d5091ec8ac64164a7d68eeb424cb66107c84b58265fbc7f8e4df0c7238cfa0ef631b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}