How to understand unauthenticated user?

Question

Django

hello, there are requirements for the task Unauthenticated users can post messages via API in chat so others can read them.
Django, Django REST Framework, PostgreSQL
- The message must contain author(unauthenticated user) email and text, create date and update date.
- Email validation (regex to check if that is real email)
...
please tell me how to understand unauthenticated user here, how the request should be filled in and how to build a model? because as I understand it

author = models.ForeignKey(User, on_delete=models.CASCADE)

won't fit

Answer 1

What's the problem? If there is a problem with English, you can use a translator.
Unauthenticated - unauthenticated. In fact, anyone who wants to.

The message must contain author(unauthenticated user) email and text, create date and update date.

It seems to me that everything is described in detail here: The message must contain the author's email (if it is not auto-torn), text, date of writing and update.