curl --request POST \
  --url 'https://api.flashcat.cloud/alert-event/list?app_key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "start_time": 1712620800,
  "end_time": 1712707200,
  "limit": 20,
  "severities": "Critical"
}
'

{
  "request_id": "01HK8XQE3Z7JM2NTFQ5YJ8P9R4",
  "data": {
    "total": 1,
    "has_next_page": false,
    "items": [
      {
        "event_id": "663a1b2c3d4e5f6789abc001",
        "alert_id": "663a1b2c3d4e5f6789abcdef",
        "title": "CPU 使用率 > 90%",
        "event_severity": "Critical",
        "event_time": 1712650000
      }
    ]
  }
}