Automation: Send web request to mailchimp returns 401

[Jeffrey Bistrong]

Trying to send a POST web request via Automation and getting a 401 error: 

{
  "type": "https://mailchimp.com/developer/marketing/docs/errors/",
  "title": "API Key Invalid",
  "status": 401,
  "detail": "Your request did not include an API key.",
  "instance": "16d96ae6-c919-7a07-29c4-7f32d1873ff6"
}

Here is a screen shot of the request settings. And I can successfully do as POST via postman with the same apikey. I am wondering if there is something different I need to do in jira in order to be able to get the mailchimp authentication to work in jira

Mail chimp documentation: 

https://mailchimp.com/developer/marketing/docs/fundamentals/