Mongoose Find all Documents by subdocument and filter out subdocs that dont match

Question

I am trying to query all documents in a collection that contain specific user data WITHOUT returning all subdocuments (there are a ton of subdocuments)

Example Documents

[
    {
        "id": 1,
        "title": "Document 1",
        "users": [
            { "id": "a", "name": "User 1" },
            { "id": "b", "name": "User 1" },
        ]
    },
    {
        "id": 2,
        "title": "Document 2",
        "users": [
            { "id": "b", "name": "User 1" },
        ]
    },
    {
        "id": 3,
        "title": "Document 3",
        "users": [
            { "id": "a", "name": "User 1" },
            { "id": "b", "name": "User 1" },
            { "id": "c", "name": "User 1" },
        ]
    }
]

Here we have 3 documents in which use with id A is in 2 of them, to Query all documents where user A exists I am doing:

collection.findManyByQuery({
    users: {
        $elemMatch: {
            id: 'a'
        }
    }
})

This returns me documents with id 1 and 3 which is correct. HOWEVER I am trying to return the documents with ONLY user A object inside the users array so my result would look like this

[
    {
        "id": 1,
        "title": "Document 1",
        "users": [
            { "id": "a", "name": "User 1" },
        ]
    },
    {
        "id": 3,
        "title": "Document 3",
        "users": [
            { "id": "a", "name": "User 1" },
        ]
    }
]

I have tried $unwind: 'users' and a couple of filters but have not got the desired result.