{
  "manageEntity": {
    "action": "Save",
    "entityId": "1307534159",
    "entityType": "Track",
    "nonce": "0xcccf01d5e5147a6cc0912b48bd26a667edbb07c7bde223422f2b8ca8c55e0bcd",
    "signature": "0x824bf939b6f9fec8774bcaa1d8af93dfbc083bceccbcd2fe8941583163c374e96c5aa4704f6c991f053fe84a056484abb31738e1c937c2d80ed72bb2bfef46491b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}