Emojis are not processed in RichText when set from API in Markdown format

Hey there, I’m building a Slack app allowing to create Entities from Slack and when setting the content of a RichText field – e.g. the Description – through a PUT API call using Markdown format, I just get the :tada: string in the RichText instead of the emoji :tada:

Is it supposed to work or should I use another approach?

Thanks for your help :pray: