{
  "session_id": "sess-fca5dd3c",
  "client_ip": "124.70.231.99",
  "client_port": 6129,
  "case_id": "unknown",
  "mode": "record",
  "generated_at_header": "",
  "received_at": "2026-06-17T18:33:47.363570",
  "payload": {
    "case_id": "TC-20260617-001",
    "generated_at": "2026-06-17T18:33:00+08:00",
    "name": "基础问候测试",
    "user_instruct": "你好",
    "assistant_expected": "你好！我是小艺，有什么可以帮你的吗？"
  }
}