Hey @Anonymous
You can try the invoke web service action for this. Search invoke web service. Then drag it. Add the url. Change the method to Post.
You can change the content type to json.
In the body, you can send the things you want to post. In the headers you can send the authentication type if any.


If the above gives you an error in the output variable generated, you might will have to go to advance and off the option of encode request body.
I think by this method you might be able to achieve what you are looking for.
If this works for you, you can accept it as the solution. And if you liked the explanation, you can give a kudo/thumbs up. It really helps. Thanks. 🙂