API for user type

Hi there,
I had some questions about Newrelic’s API with the new pricing plan.

What I understand from the documentation is that are two types of users - basic or full (New Relic One user model: Understand the user structure | New Relic Documentation)

And what you get from the API - listing of users is only the user’s role (Listing users for your account | New Relic Documentation)
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Now my question is:

If the user role is ‘Owner’ or ‘Admin’ is it correct to assume that they are paying for a Full user subscription?
And if the user role that is returned is just ‘user’ then it is a free Basic user subscription?
If not - is there any other API’s that does return the user type?

Thanks in advance!