MongoDB: How to get distinct values from a nested field within an Array starting with a dollar sign?

I'm currently using the MongoDB Database Profiler and want to Query the system.profile Collection to read distinct values of the field tenantId in our profiled aggregations.

The BSON-Documents looks like this:

    {
    "op" : "command",
    ...
    "command" : {
        ...
        "query" : {
            "$and" : [ 
                {
                    "type" : {
                        "$in" : [ ... ]
                    }
                }, 
                {
                    "tenantId" : "1234567890",
                    "shardKey" : "a8"
                }
            ]
        }
...
}
 {
    "op" : "command",
    ...
    "command" : {
        ...
        "query" : {
            "$and" : [ 
                {
                    "type" : {
                        "$in" : [ ... ]
                    }
                }, 
                {
                    "tenantId" : "0987654321",
                    "shardKey" : "a8"
                }
            ]
        }
...
}

I tried the following: db.system.profile.distinct("command.query.$and[1].tenantId") which is not working because of:

"FieldPath field names may not start with '$'.",

I also tried a lot of other different things like huge aggregation pipelines which won't work. I just can't figure it out.

I'm currently on MongoDB Version 4.4, so I couldn't test $getField.

Expected Output would be: ["1234567890","0987654321"] and of course no duplicates.

I hope someone can help me :)

Kind regards, Mildem