UserApp REST API - Create user

Hello guys,

Do you have an experience with REST API in UserApplication? I am playing with it and I am struggling with creation of the users. Update, delete... this is working. But to define a JSON file for creation of the users is a little bit more challenging. Documentation contains an example but it is too generic to me.
https://MYUSERAPP:PORT/idmappsdoc/#/Access/resource_Access_createUser_POST

Do you have any simple example how to create e.g. "John Doe" (jdoe) with password, email and telephone number?

Thank you in advance!

Regards,
Milan