req.json() parses as [object ReadableStream]

  const response = await process.env.WORKER_QUEUE.fetch("http://localhost:8787", {
    method: "POST",
    body: JSON.stringify({
      hello: "world",
    }),
    headers: {
      "Content-Type": "application/json",
    },
  });

async fetch(req: Request, env: Env, ctx: ExecutionContext): Promise<Response> {
        const data = await req.json();
        console.log(data);
        return new Response('OK');
},