title: Mailchimp api v3 - replicate campaign
body: <p>How can you replicate an existing campaign
  according to v3 of the MailChimp API - programmatically? (I know you can do it via the frontend.)</p>
  
  <p><a href="https://us9.api.mailchimp.com/schema/3.0/Campaigns/Instance.json" rel="nofollow">https://us9.api.mailchimp.com/schema/3.0/Campaigns/Instance.json</a></p>