{
  "manageEntity": {
    "action": "Save",
    "entityId": "562304026",
    "entityType": "Track",
    "nonce": "0xdd1d7a52e697bf5533e974bcca81f933edf35e31ae0426955931122269fc5128",
    "signature": "0xd1042b900cdabd474c7477c077c4ffe4581d358d7a6ae47d20833a8c3c1e1b8023a9daedfc2666a96d1d5ca0a5a71dc0024d4f68c937ca01e92e21aa26de64ca1b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}