{
  "manageEntity": {
    "action": "Save",
    "entityId": "1148842669",
    "entityType": "Track",
    "nonce": "0x0610b7c0a648e84d7f922e16cbca1914f98881a1267ab3844da0fbddcdd3fa00",
    "signature": "0xa0280c8e174534784b8771947cf4423f70600c6024e214f0191e524d6115be6b2c9de291a1bdcb5ce6c44e04ffa22b5a9d27261740c5a85dbac6a53a3fca17141b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}