{
  "manageEntity": {
    "action": "Save",
    "entityId": "1283783317",
    "entityType": "Track",
    "nonce": "0xf36df183eca91e7826967dc2533e5f64db83c3569eae060fb3e18b6426ed807e",
    "signature": "0x6eaab192daca7388c964617d87d3018568000805b1928f6773a457ed709efda1675c7c00dabfeb12e2754e6acbceb64934b104293b5800a55392c2e5317035181b",
    "signer": "0xbd18A0CEDC52343842f076A474bA46656B93A232",
    "userId": "194819663"
  }
}