Right now the hierarchy cache is included in the data, which is caused by
ZP-1198 - fixing that ticket would fix this issue.
The hierarchy cache includes quite some data and is not always needed (e.g. not for[ KOE-24|https://jira.kopano.io/browse/KOE-24]).
This information might be useful in certain use-cases, so there should be a flag to include that data (default off).