{
  "manageEntity": {
    "action": "Save",
    "entityId": "1660229825",
    "entityType": "Track",
    "nonce": "0x54c9a4c63c5961364f2bfaa1c327f8e6b43ab20ffd73238a1c55893312c8d2cb",
    "signature": "0x1a35e48759df9999646c6fa54c32d04334f64b0a1f9e98c87f526891659bc2fa77a9d27b8ff32ad0119ae20c99958cf90bafbd9b815c835dccd208264674da3c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}