{
  "manageEntity": {
    "action": "Save",
    "entityId": "1569344035",
    "entityType": "Track",
    "nonce": "0xafd790f01a8df1a3acbb128bc9466ecf07aed6723dabccb415f2da1a8eef135f",
    "signature": "0x8799462368b86be12c49066d9583ca4ab37efe446774f9ed87fb047f08e9f8425b476b96f6c197d49cc1f7ef169630a4d3fa98a23a0574a575d4860fdf821ac71b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}