{
  "manageEntity": {
    "action": "Save",
    "entityId": "696631",
    "entityType": "Track",
    "nonce": "0x1a86415502527bfcd776759bfb099e3d85d045f8377809055658b8cdee2f5848",
    "signature": "0x85b2b498c717a44dcc7dd7d5939d1254be1474f20fc059c4209f22ac145b0b690e99176b69acb7c976578fc1d14ee11ea149200cdf755dcdfb8e92710acf38f91c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}