I want to show a popup with something like "Thank you for subscribe" instead of the green notification.

**Notification Image:**

[![enter image description here](https://i.stack.imgur.com/tmpVb.png)](https://i.stack.imgur.com/tmpVb.png)

So, I don't know how to get the message in session, or override the SubscribeController to send some parameter by get to know that the user has subscribed. How can I do that?