{
  "format": 1,
  "capture": "tls13-key-update",
  "check": "http1",
  "exchanges": [
    {
      "method": "GET",
      "path": "/pre",
      "status": 200,
      "body_text": "pre-body"
    },
    {
      "method": "GET",
      "path": "/post",
      "status": 200,
      "body_text": "post-body"
    }
  ]
}