{
  "manageEntity": {
    "action": "Save",
    "entityId": "1759669424",
    "entityType": "Track",
    "nonce": "0x7e028c18798e9831c330b51b2d4f08d4bb5497fc77c4322e386692f6ed03e0dd",
    "signature": "0x59235832bb1f7fb9b5fde4288ed3cc367c3d1dd8cc51a3a9fd5218dac3dab084734abae14b0ed853673e94a93368ff6d524dafa3339fa39cb3ffc902f3b344721b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}