I want to have a Logic App that gets per tenant all its subscriptions. I understand that there is a rest API for that purpose: GET https://management.azure.com/subscriptions?api-version=2020-01-01 as mentioned in the

When you add it, you create a service connection to Azure by logging in, which can be used for subsequent requests.

This sample implementation does the trick: it gets the subscriptions and returns them from the Logic App.