Spring authentication scheme using the authentication header

I am using a spring boot application and I have a web security config adapter set up to authenticate each request using the jwt.

I want to expand my service to allow a different api end point to be authenticated using the header. One of the services I am integrating with sends a web hook and all it sends is the request with the custom header I set it up to include. How can I set up a specific endpoint to only authenticate using a custom header?