Trailing whitespaces in string data (except for the password) will be trimmed.
The request can contain all, some or none of the optional parameters. Login, email, Facebook ID, and the external user ID should not be taken previously.
If you want to create a user with some content (for example, with an avatar) you have to create a blob first. The blob is the entity that is a file in a system. To learn how to create a blob, review this section.
You can assign tags to the user. The same tags can be used for any number of users.