{
  "manageEntity": {
    "action": "Save",
    "entityId": "1348583430",
    "entityType": "Track",
    "nonce": "0xe06b55e0f14d2875a62ab076eda4f01f8ef5c6b48d5d07df17522c8f91b1d0f6",
    "signature": "0xdd02fd78c84fa4cbfa3e58fa7b6222185f594bd17d740758b86f28c4d8fbaa9e559f8753f94a1d6cbd5729978ce197d71df1a551c686250d24441396c739a2d11c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}