How to POST an intent

To post a message to a conversation, we can POST {"message": ...} to https://api/conversations/{conversation_id}/messages.

Is there a similar way to POST an intent?

As for why I want to do that, it’s because I want the chatbot to start the conversation with an action that has a follow-up action, and requesting to execute a custom action does not seem to support that, it only executes the given action and not its follow-up.