Multiple featureEvents in an Aggregation API call?

Hi,

I'm trying to make an API call so I can see how various features are being used. So far I've had success with the aggregation endpoint. If I set the featureEvents to null I get all the defined features. (Which is a lot.) Or I can get the data for one feature as shown below.

Is there any way to send a list of specific feature Ids so I can get the data just for those?

Thanks

{
    "response": {
        "mimeType": "application\/json"
    },
    "request": {
        "name": "myTest",
        "pipeline": [{
                "source": {
                    "featureEvents": {
                        "featureId": "Uyk...cFY"
                    },
                    "timeSeries": {
                        "period": "dayRange",
                        "first": "1725840000000",
                        "count": -7
                    }
                }
            }
        ]
    }
}