{
  "manageEntity": {
    "action": "Save",
    "entityId": "1652533149",
    "entityType": "Track",
    "nonce": "0x2707e024a3f70840e2139224e4a4adbae023e4c55e8b170a64c19741be549295",
    "signature": "0xb63f8e9797469d008d7f46052a9adf1016dca95d75fd87d13ae986099f4eff854726528168aa1e1b405c0402a8c3b26a9d9a1aa3bc9cd107b3a9cb0ea44789521c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}