{
  "manageEntity": {
    "action": "Save",
    "entityId": "1863115769",
    "entityType": "Track",
    "nonce": "0x6fc6fd0c325c2ac94077e06083f114e35d78930c7e7c4ecd8c0cb57206f39b06",
    "signature": "0x4b8660ea7b86d4d17abbcd3fa5683376e0211960c51cea7e7a42c9de4a3e66751075ce7348b44771d6d78b2f18ee2daa8064ce855d0401a003d4564a654fbd321c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}