{
  "manageEntity": {
    "action": "Save",
    "entityId": "131983",
    "entityType": "Track",
    "nonce": "0x8c06206600470409c9084319b6f29ead5f382fb6788121a6fa44dac579407bff",
    "signature": "0x659867a5a457d10660063b5c0665a5a2e690acf3f65cf3fcb35bfc732b85367d0b7de6dadae1b3f44a3e3610b906632c846ff3b292fd9644516b4d405e2491921b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}