Manipulate the users by web services

As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.

peppelinux

I looking for but I have found only this topic http://forums.alfresco.com/en/viewtopic.php?f=27&t=4817&p=15084&hilit=manipulate+users#p15084
It says (but I'm not sure) is not possible access to the users by the web services.
Is this true? If this is possible , what are the class for do this? Are there any example ?
Thanks a lot

peppelinux

In the book Alfresco. Enterprise Content Management Implementation
I have found this:

Using the Web Services API to Create Users
You may also use the web services API to programmatically create users in Alfresco.
This is useful if you already have another software application to manage users and
you would like to create users in Alfresco from that application as needed.

But there is not explained the way to do this.
Somebody do you now any example o tutorial?   
Thanks