CALL THE API POST TOKEN CHANGES DAILY

HELLO, I have the following code that returns me a token that changes daily (Ref1), do I need to be able to somehow store it and be able to send it in a second query in the Header?

------- REF1______

let
    url = "https://XXXXXXXXXX.com/api/invas/rest/usuario/loginWS",
    body =
     "{" "user" ":" "1111" "," "password" ":" "1111" "}",
    Source =
    Json.Document (
        Web.Contents (
            url,
            [
                Headers = [# "Content-Type" = "application / json"],
                Content = Text.ToBinary (body)
            ]
        )
    )
in
    Source