{
  "manageEntity": {
    "action": "Save",
    "entityId": "426240225",
    "entityType": "Track",
    "nonce": "0x71ee33bb4dd6c7dd63b52e9aa7a54757955b7283a7b87e615d371a7d1d954094",
    "signature": "0x22dd9f7d06cc60b6dce2b729ab1dc4df658b7c0d3f795b26c1e07aeed08dc6d373d366e684fba9725dfaa79ea603dfffa7230bebcc195d665d4018e3824f45851c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}