Ideas:
https://www.google.nl/#q=nginx+dynamic+loading+certificate
Just one example:
http://www.greg-gilbert.com/2015/08/serve-dynamic-ssl-certificates-in-nginx/
https://www.google.nl/#q=nginx+dynamic+loading+certificate
Just one example:
http://www.greg-gilbert.com/2015/08/serve-dynamic-ssl-certificates-in-nginx/