It is not proper for ZCertificate to store extensions of certificates by the type dict.

[GOODPWDCETCSZ]

In the JSON output, ZCertificate uses the type dict to store extensions of certificates. It is not proper to use such unique key type since it cannot store two extensions with the same extension name but different extension content and then it is impossible to check the violation of RFC 5280. It is recommended to use list instead of dict to process extensions.