POST method in Power Query 400 Bad Request

Question

I'm trying to receive data from an API, but it's POST method, so I'm trying to send the data, but it won't

let
    body =  [COD_INT= "886000", COD_INT_CSO= "0"],
    Parsed_JSON = Json.FromValue(body),
    Source = Web.Contents("https://apixxxxxxx.yyyyyyyyy.com.br/api/CursosConcluidos", 
            [
                Headers= [#"User-Token" ="673E9CAF-xxxxxxxxxxx-xxx-xx-968"],
                Content = Parsed_JSON
            ]
        ),
    final = Json.Document(Source)
in
    final

In Postman it works perfectly

Print from Postman

I tried the same from here but it's the same result

Changing or not the ParsedJSON in Binary gives the same result, 400