Nginx Json log format
log_format main escape=json '{'
'"time_local": "$time_local",'
'"remote_addr": "$remote_addr",'
'"http_x_forwarded_for": "$http_x_forwarded_for",'
'"server_addr": "$server_addr",'
'"scheme": "$scheme",'
'"request_host": "$host",'
'"request": "$request",'
'"status": "$status",'
'"http_referer": "$http_referer",'
'"http_user_agent": "$http_user_agent",'
'"upstream_addr": "$upstream_addr",'
'"upstream_status": "$upstream_status",'
'"upstream_response_time": "$upstream_response_time"'
'}';