title: How to test my published LEX bot on a REST CLIENT
body: <p>I have created my lex bot and published it. I am now trying to test it out from a rest client.</p>
  
  <p>The idea is once working from rest client ,i can integrate this with my custom UI using rest calls.</p>
  
  <p><a href="https://i.stack.imgur.com/NzwJ7.png" rel="noreferrer"><img src="https://i.stack.imgur.com/NzwJ7.png" alt="enter image description here"></a></p>
  
  <p>I am using this request body from posttext as per this link 
  <a href="http://docs.aws.amazon.com/lex/latest/dg/API_runtime_PostText.html" rel="noreferrer">http://docs.aws.amazon.com/lex/latest/dg/API_runtime_PostText.html</a>​</p>
  
  <p>When i am using  this from rest client i am getting Missing Authentication Token.</p>
  
  <p><a href="https://i.stack.imgur.com/keakw.png" rel="noreferrer"><img src="https://i.stack.imgur.com/keakw.png" alt="enter image description here"></a></p>
  
  <p>The end point url used is <a href="https://runtime.lex.us-east-1.amazonaws.com" rel="noreferrer">https://runtime.lex.us-east-1.amazonaws.com</a></p>
  
  <p>Should i add something in the authorization header like AWS Signature or something else to make this work.</p>