How do I fix these parameters for HTTPBODY in swift?

I have;

let parameters =
        [
          "generalSearchInput": search,
          "requireAllWords": true,
          "brandOwner": brand,
          "includeDataTypes":
          {
              "Branded": true
          }
        ] as [String : Any]

THE ABOVE OBVIOUSLY DOES NOT WORK, I just do not understand how to do nested.

I am trying to mimic;

{
    "generalSearchInput": "SHARP CHEDDAR CHEESE",
    "requireAllWords": true,
    "brandOwner": "usa",
    "includeDataTypes": 
    {
        "Branded": true
    }
}

Thanks