I created a middleware using NextJS 15. I am able to decode the token successfully and got userId and username and i want to attach it with req body object. once the todo is created by a user it should add the userId and username as well inside the a todo

For example: 
{
    "message": "A New Todo created successfully",
    "newTodo": {
        "title": "Learn Sundarkand",
        "status": false,
        "date": "2025-01-20T06:58:20.469Z",
        "_id": "678df40c9668b2d9b71c8f99",
        "userId" : "678df40c9668b2d9b71c8",
        "userName" : "xyz",
        "__v": 0
    }
}

this is my middlware code snippet

export async function middleware(req) {
  console.log("------>Middleware triggered");
  try {
    const token = await getCookies("jwtToken");

    if (!token) {
      return NextResponse.json(
        { message: "Unauthorized Access" },
        { status: 401 }
      ).redirect(new URL("/login", request.url)); // --- what should i add in request.url ? Find out here
    }

    // verify token using jose
    const {
      payload: { userId, username },
    } = await jwtVerify(
      token,
      new TextEncoder().encode(process.env.JWT_SECRET)
    );

    console.log("Decoded Token:", username, userId);
    // console.log("Request", request);
    // attach with the request object ---- > TEST this on tomorrow.
    const body = await req.json();
    body.userId = userId;
    body.username = username;

    console.log("REq---->", body);
    return NextResponse.json({ body }).next();
  } catch (error) {
    return NextResponse.json({ message: error.message }, { status: 500 });
  }
}

// See "Matching Paths" below to learn more
export const config = {
  matcher: ["/todos/create"],
};