{
  "consumer" : { "name": "a consumer"},
  "provider" : { "name": "a running provider"},
  "interactions": [
    {
      "description": "a request for the index",
      "provider_state": null,
      "request" : {
        "method" : "get", "path": "/",
        "headers" : {
            "X-Custom-Header" : "foo"
          }
        },
      "response": {
        "status" : 200
      }
    }

  ]
}