passTLSClientCert middleware usage

Hi,
On using the passTLSClientCert middleware, I am getting the certificate details in URL encoded format, how it to get in key-value format or atleast in decoded format.

{"host":"127.0.0.1:443","user-agent":"k6/0.25.1 (https://k6.io/)","content-length":"75","content-type":"application/json","x-forwarded-for":"127.0.0.1","x-forwarded-host":"127.0.0.1:443","x-forwarded-port":"443","x-forwarded-proto":"https","x-forwarded-server":"IN01N01261","x-forwarded-tls-client-cert-info":"Subject%3D%22C%3DIN%2CST%3DTELANGANA%2CL%3DHYDERABAD%2CO%3DClient%2CCN%3Dhost%2A.com%22%3BIssuer%3D%22C%3DIN%2CST%3DTELANGANA%2CL%3DHYDERABAD%2CO%3DClient%2CCN%3Dhost%2A.com%22%3BNB%3D%221576043146%22%3BNA%3D%221607579146%22","x-real-ip":"127.0.0.1","accept-encoding":"gzip"}