Getting tripped up with the single quote in the membershipRule property, using format in this article which works in Graph Explorer. Flow says invalid json, tried a few variations like ("user.department -eq \"Marketing\"") which is valid to Flow, but Graph throws a "bad request" error.
{ "groupTypes":[ "Unified", "DynamicMembership" ], "membershipRule": 'user.department -eq "Marketing"', "membershipRuleProcessingState": "on" }
Any suggestions to try?