{
"timestamp": "%{strftime({\"%Y-%m-%dT%H:%M:%S%z\"}, time.start)}V",
"host": "%{if(req.http.Fastly-Orig-Host, req.http.Fastly-Orig-Host, req.http.Host)}V",
"status_code": %{resp.status}V,
"request_method": "%{json.escape(req.method)}V",
"request_path": "%{json.escape(req.path)}V",
"query_string": "%{json.escape(req.url.qs)}V",
"content_type": "%{json.escape(resp.http.Content-Type)}V",
"client_ip": "%{req.http.Fastly-Client-IP}V",
"user_agent": "%{json.escape(req.http.User-Agent)}V",
"referrer": "%{json.escape(req.http.referer)}V"
}