{
  "manageEntity": {
    "action": "Save",
    "entityId": "797837821",
    "entityType": "Track",
    "nonce": "0x2c10052f9b35f1460122d0459d863baa7767d00a76fc8da381977559a6cd150b",
    "signature": "0xb29c9ff08e75cb5f680ec032df625630f1f9e8ac7c0930db9fc31d4ec683b9db7d7b13bbaf3fa80fe319570678d1a9f45d72e0c058d79b9f763b898b2d7ef0221c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}