Try to unescape those characters (e.g. http://localhost:19639/api/RegistrationRegisterTile/)
Your configuration would be similar to how your view is served up. So it can exist at any endpoint as long as it returns the HTML file. If you're using the Jive Node SDK, it would look something like:
http://localhost:19639/RegistrationRegisterTile/configuration.html?features= and a list of the features you want that view to be loaded.
Here's a lot more documentation about that here: Creating Custom View Tiles