{
  "manageEntity": {
    "action": "Save",
    "entityId": "27491",
    "entityType": "Track",
    "nonce": "0x0adf6fb543649262c4cafde6a4921bdbbc259f20e81742b7ad94384a996cdb5f",
    "signature": "0x75bb69ed0f94b4d9ffecd7035d4278870a497fc6a69af190d5edd34d4d57eb30119d543d71bac1f4b408b50faa521bf2e0813a78cf65e9efe5de639ab8fc9f7a1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}