{
  "manageEntity": {
    "action": "Save",
    "entityId": "1260041436",
    "entityType": "Track",
    "nonce": "0xffec13813d50abe741d37e73e81d7886f48057062a87c37259f0806ea1e90b20",
    "signature": "0x706e1fa4121413f1d9b836013eb43d3216833a461c59a8c7d57d4f37e6b2b86664f3290b8c71d23d3974a118a9ef1775fe4e8e7a06bf8c93c282877128c40c581c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}