Hello tbon,
To Export the Users from your WebEx Control Hub, navigate to your WebEx Admin Page xzy.webex.com > User Management > Import/Export Users and click on "Export".
After a few whiles, you will be able to download the .csv export of your WebEx Site containing details such as - User ID, Active Status, Name, Display Name, e-mail, Language, Host privileges, Billing Code and many, many more.
I hope that helped.
Regards,
Jan