{
  "manageEntity": {
    "action": "Save",
    "entityId": "275566654",
    "entityType": "Track",
    "nonce": "0x11b949e28ea4b697277fe9d12c85a2fb3139bc14e97e1b2617a9cfa3a1c3d662",
    "signature": "0x0e80dc086e0bb4c09f01fa8d7081bbdaa54099a31e1d77fb2ae11106f4c10ed917ae4f2aa9ab4ccceb84c5876bd0802ff8e88434b5115825cdbc6670fe55203e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}