{
  "manageEntity": {
    "action": "Save",
    "entityId": "928825686",
    "entityType": "Track",
    "nonce": "0x05c76bf0d9389a278f5f12c13234bc1fe9fd91a5cb34ca4d9b059921fef7985c",
    "signature": "0x30f9ab1d662a173cd12f6938972958c928419e5e67e7995b5163fcb38808bcf3437734aa6610f52ac7f04e5344bee805ecba67baeb2450e4688b71f722c6cd501b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}