You can use html tags to customize your notification's text, using for example
To achieve this, change the "Message" of your notification to:
Signed up for <span style="font-weight: bolder; font-family: helvetica; color:#EF8B1F;">an awesome course</span>
Markdown is a simple way to format text that looks great on any device. It doesn’t do anything fancy like change the font size, color, or type — just the essentials, using keyboard symbols you already know.
This option is supported in all notifications EXCEPT for COMBO and REVIEWS:
Stream, Informational and Counter
How to use
To add bold text to your notification, simply wrap your words with 2 asterisks (*).
To add italic text to your notification, simply wrap your words with single asterisk (*).
Bold + Italic
To make your text bold + italic, simply wrap your words with 3 asterisks (*).
To add a link in your notification text, put the text link between square brackets followed by the link itself in round brackets, e.g. [text] followed by (link)
To add code to your notification, wrap the text in back-tick symbol `
To learn more about available markdown formatting/styles, visit https://commonmark.org/help/