{
  "manageEntity": {
    "action": "Save",
    "entityId": "2069897322",
    "entityType": "Track",
    "nonce": "0x566d6377d4a4e959e7db1a3a0096141dae3b8c32b4ec9228e052e75ed93b1d7c",
    "signature": "0xb1671fecfdafbd9f6f2ae11d61788e87758fe07bc01fc0ca2ddd4450c1d3bf7f55f9f3f4e367ccb9cdfb089689d4b58aff8605b1ee9e414ac3cb7beddc5df7131c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}