Comment 2 for bug 2049785

And some extra though about the issue

- unsure why those systems have an updated update-manager but an old ubuntu-advantage-tools?

- updating our depends on u-d-t would avoid users hitting the problem due to the outdated version

- we should still handle the case where the client doesn't return the a valid json output, either by catching the exception or by backporting the switch to use the proper python api (and verifying that this variant of the code handle the situation better, should be easy to do on an not updated focal system)

The fact that it shouldn't impact updated systems in most cases make it a bit lower importance but we should probably still SRU a fix to the different series