REST API POST text-plain format instead json object

Hi All,

I’m trying to pass raw text body through POST method in REST but I’m stuck. All topic that I found around is about custom JSON body but none of them is about how can I POST raw text (Content-Type: text/plain) through an API. Maybe there is someone out there who faced something similar.

The API system is from the IGDB: IGDB API docs
Endpoint is: https://api.igdb.com/v4/search - The raw plain text for example:
search “Witcher”; fields name;

It does work from Postman but can’t reach the similar from Appgyver so far.

Can you help me?

Thanks in advance!