I want to load related records inside "relationships" key

json_api do
  type "artist"
  includes [:albums]
end

{
  "data": [
    {
      "attributes": {
        "name": "Resonanz",
        "inserted_at": "2025-05-14T10:04:02.255547Z",
        "previous_names": [],
        "updated_at": "2025-05-14T10:04:02.255547Z"
      },
      "id": "030a340b-2d9d-4961-ae5a-5c7b80a30215",
      "links": {},
      "meta": {},
      "type": "artist",
      "relationships": {
        "albums": {
          "data": [
            {
              "id": "272bb477-3416-42e1-bcb4-551f11d26ee8",
              "type": "album"
              <For some reason the attributes are public, but why I can't see it?>
            }
          ],
          "links": {},
          "meta": {}
        }
      }
    }
  ]
}

{
  "data": [
    {
      "attributes": {
        ...
      },
      "id": "030a340b-2d9d-4961-ae5a-5c7b80a30215",
      "type": "artist",
      "relationships": {
        "albums": {
          "data": [
            {
              "id": "272bb477-3416-42e1-bcb4-551f11d26ee8",
              "type": "album"
              ... <-- I want to see the attributes! :(
            },
          ],
          "links": {},
          "meta": {}
        }
      }
    }
  ]
}