Nginx log format for detailed JSON entries

site.nginxconf

log_format json '{"ip":"$remote_addr",'
                 '"time":"$time_local",'
                 '"host":"$host",'
                 '"method":"$request_method",'
                 '"uri":"$uri",'
                 '"status":$status,'
                 '"size":$body_bytes_sent,'
                 '"referer":"$http_referer",'
                 '"ua":"$http_user_agent"}';