{
  "manageEntity": {
    "action": "Save",
    "entityId": "104359",
    "entityType": "Track",
    "nonce": "0xcc15785a79460ff09e1da57145fb95f1ed093adfa8bba38f41b4862b08f9277d",
    "signature": "0x00026bb7bdcf97a6c47aacf1e684ebaf895b04f3c16cc86d2ec9d0afb00b14ca0487447c6837f43ab3e7fdc65f00d71a1ff84f217e714f55ec7a6003d9f4ef511b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}