[{"_id":ObjectId("5ec7c92b5c7c7d60a6b0db1b"),"PartitionOffset":{"Partition":0,"Offset":NumberLong(6)},"Entity":{"_id":"d9356f7c-296d-4185-a310-a70f40c4facc","Groups":null,"AccessKey":"uSkXHt/uXdlpySvYeqgokVHOK9fX1vmhMP4ye+ZoN/Y=","Username":"apigateway","Password":"0Af+bFnFHgNWH3pFhPyk4Qf4ghQwiQvJN1KxBjPN7b0=","BaseRole":"root"}},{"_id":ObjectId("5ec7c92b5c7c7d60a6b0db1d"),"PartitionOffset":{"Partition":0,"Offset":NumberLong(5)},"Entity":{"_id":"7c61cf43-0cd6-4182-ba2a-3365cc349ba7","Groups":null,"AccessKey":"PWmPwfBnXNSHFTDkTfbYouZVj306nz7qPVQXsQBd9Uk=","Username":"root","Password":"49Cms+qnkgkP+SLtOpAP7QjfbMU2s1ZC42sly7nmKp0=","BaseRole":"root"}},{"_id":ObjectId("5ec7cfa51a14b5f69fd0cd50"),"PartitionOffset":{"Partition":0,"Offset":NumberLong(7)},"Entity":{"_id":"e55fed89-a392-4811-841a-f02d9d86e7b7","Groups":["Chicago/Brooklyn/Test"],"AccessKey":"WEXEz0MZpOaxaQQYPDboNqcuh1IGBiZXtygEiKYw+/M=","Username":"tesdgsdfsdfs","Password":"4ozif3ckD7EUe/TnWrxhd1ugzmZeQARE7nlGKBADu60=","BaseRole":"sdfsdfsdfsfsf"}}]

db.collection.find({"$or":[{"Entity.Groups":{"$exists":false}},{"Entity.Groups":{"$eq":null}},{"$expr":{"$anyElementTrue":{"$map":{"input":"$Entity.Groups","as":"group","in":{"$anyElementTrue":{"$map":{"input":["Chicago/Brooklyn/Toust"],"as":"userGroup","in":{"$eq":[0,{"$indexOfBytes":["$$group","$$userGroup"]}]}}}}}}}}]})