nginx log_format bunyan

nginx_log_format_bunyan.conf

    log_format bunyan   '{'
                          '"name": "nginx/$nginx_version",'
                          '"hostname": "$hostname",'
                          '"pid": "$pid",'
                          '"level": 30,'
                          '"time": "$time_iso8601",'
                          '"v": 0,'
                          '"msg": "access",'
                          '"remoteAddress": "$remote_addr",'
                          '"remotePort": "$remote_port",'
                          '"req": {'
                            '"method": "$request_method",'
                            '"url": "$request_uri",'
                            '"headers": {'
                              '"user-agent": "$http_user_agent",'
                              '"host": "$host",'
                              '"referrer": "$http_referrer",'
                              '"username": "$remote_user",'
                              '"content-type": "$content_type",'
                              '"content-length": "$content_length",'
                              '"accept": "$http_accept",'
                              '"accept-language": "$http_accept_language",'
                              '"accept-encoding": "$http_accept_encoding"'
                            '},'
                            '"serverProtocol": "$server_protocol",'
                            '"requestLength": "$request_length"'
                          '},'
                         '"res": {'
                            '"statusCode": "$status",'
                            '"headers": {'
                              '"server": "nginx/$nginx_version",'
                              '"content-length": "$body_bytes_sent"'
                            '},'
                            '"responseTime": "$request_time"'
                          '}'
                        '}';

Example bunyan output:

[2016-03-17T19:42:41+00:00]  INFO: nginx/1.9.5/59926 on 237662da-0720-4ae2-81b5-3c42946000a4: access (remoteAddress=98.176.120.243, remotePort=28263, req.serverProtocol=HTTP/1.1, req.requestLength=172, res.responseTime=0.000)
    GET / HTTP/1.1
    user-agent: curl/7.43.0
    host: nginx-bunyan.inst.d8dbab84-3db1-ef79-c96e-d87655e95380.us-sw-1.triton.zone
    referrer: http://www.google.com/
    username: -
    content-type: -
    content-length: -
    accept: */*
    accept-language: -
    accept-encoding: -
    --
    HTTP/1.1 200 OK
    server: nginx/1.9.5
    content-length: 3
[2016-03-17T19:42:47+00:00]  INFO: nginx/1.9.5/59926 on 237662da-0720-4ae2-81b5-3c42946000a4: access (remoteAddress=98.176.120.243, remotePort=20738, req.serverProtocol=HTTP/1.1, req.requestLength=417, res.responseTime=0.000)
    GET / HTTP/1.1
    user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_3) AppleWebKit/601.4.4 (KHTML, like Gecko) Version/9.0.3 Safari/601.4.4
    host: nginx-bunyan.inst.d8dbab84-3db1-ef79-c96e-d87655e95380.us-sw-1.triton.zone
    referrer: -
    username: -
    content-type: -
    content-length: -
    accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
    accept-language: en-us
    accept-encoding: gzip, deflate
    --
    HTTP/1.1 200 OK
    server: nginx/1.9.5
    content-length: 3