You can filter the events returned by the call, this is the list I use for getting block events...
nbar_block, cf_block, sf_url_block, sf_binary_block
Note that if you use the Python library there can be an issue if there are no events, see this thread for the workaround I use...
https://community.meraki.com/t5/Developers-APIs/Events-same-event-different-API-return-also-call-nev...