{
  "manageEntity": {
    "action": "Save",
    "entityId": "1829990784",
    "entityType": "Track",
    "nonce": "0xc0ef6840181769697c62f9b2302061fc449dc8f33ef678cc8ed48220ff3af731",
    "signature": "0x9088de09a3e8877a00b363c5fa775b317900a82c06daeeca91c121a296afae1f28fd10fac6220fd0dbc68582adb86c95c45c1d50811413b440670828eadd9d961c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}