{
  "manageEntity": {
    "action": "Save",
    "entityId": "1099201959",
    "entityType": "Track",
    "nonce": "0x25ffd6055b63c79fa5fbaf5dc41a51ecaa59dbfeef361f6168e4f5a9324496f2",
    "signature": "0xef5c9a0f83c7b3f413204131bf841bc5eb869166aa8c2866d2576990347cdef040e19f27185909079a1f2b7de153a23190db657d4938f0ca3288cad543ceebf61b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}