title: How to invite user using Api in mail chimp
body: <pre><code> I am integrating mail chimp API in my rails project 
   I am using OAUTH2 API Documentation and following the below ref.
  </code></pre>
  
  <blockquote>
    <p><a href="http://developer.mailchimp.com/documentation/mailchimp/guides/how-to-use-oauth2/" rel="nofollow noreferrer">http://developer.mailchimp.com/documentation/mailchimp/guides/how-to-use-oauth2/</a></p>
  </blockquote>
  
  <pre><code> It integrate successfully and return an access token.
  
   My Project has a requirement that Admin can invite user 
   and give the permission of each user using Api same like below image. 
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/1d2IR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1d2IR.png" alt="IMAGE"></a></p>
  
  <pre><code> Is there Any endpoint available in a API that accept the parameters 
   like access token,user_email and user_type and add/update the visitor same like web ?
  </code></pre>