Investigate how cloud responses sometimes contain malformed data

[UweTrottmann]

E.g. reports like

Caused by java.lang.IllegalArgumentException: expected primitive class, but got: class com.uwetrottmann.seriesguide.backend.lists.model.SgListList
       at com.google.api.client.util.Data.parsePrimitiveValue(Data.java:467)

The connection should (?) be encrypted. However, the certificate is not pinned. So I guess tampering is possible with an interception proxy?