{
  "manageEntity": {
    "action": "Save",
    "entityId": "1676158783",
    "entityType": "Track",
    "nonce": "0x20a8b8a6fe9571a143fc356b63192a7cabb9a496731124356d86fb41f7a8a48c",
    "signature": "0xcca5ab2411081c7c813e32dd43ed8fb26eda05040988228854b589fed4c72a5758690ab16489178b277df7580252955a59e620355288be7b31975516e8af6cbd1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}