title: How to make request to AWS API Gateway from Postman using temporary credentials
body: <p>I followed the steps mentioned in this <a href="https://github.com/awslabs/api-gateway-secure-pet-store" rel="nofollow noreferrer">repo</a> and created an API for users and pets.
  I am able to get the temporary credentials after login and signup.
  But for "/pets" (both POST and GET), I am getting "Internal Server Error".
  I tested the functionality of pets API from AWS API Gateway test interface and was able to create and list pets.</p>
  
  <p>Want to know about the parameters and headers that need to be set in Postman for an authorized request. </p>