{
  "manageEntity": {
    "action": "Save",
    "entityId": "1674520736",
    "entityType": "Track",
    "nonce": "0x92cd730b2d94d5477271c8f00b8c1689551ebfa7884243fa0d3f66c83c068af8",
    "signature": "0xa82b6f11dc544cbb69a2ac19af512c5a09c371dd9c50fd40905bb41f177727057c1e3da7600371e4a8f789445556180aa580723c7df1ac9fffeeab1c98c610f11c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}