demo.js

 const { data } = await axios.post(
      "/login",
      {
        address,
        signature,
      },
      {
        headers: {
          'Content-Type': 'application/json',
        },
      }
    ); 

const aws = new AwsClient({
    accessKeyId: data.AccessKeyId,
    secretAccessKey: data.SecretKey,
    sessionToken: data.SessionToken,
    region: 'ap-southeast-2',
    service: 'execute-api',
  });

  await aws.sign(
    "/hello?name=YA",
    {
      method: 'GET',
    }
  );

 const response = await fetch(request);