How do I begin sending a post message to a webapi using httpclient in C#?

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C#

controller

WebAPI

I'm not looking for code, more so just guidance. So far, I have a very basic WebAPI with only a post function. My goal is to load up a console application that uses HttpClient to send a POST message to my WebAPI. I've looked into videos on how to do this, but it all seems quite complicated and was wondering if anyone could simplify the concepts for me.

What I have tried:

This is my very basic API that only has one post method that's empty:

namespace WebAPI.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class GeneratorStatusController : ControllerBase
    {
        public GeneratorStatusController()
        {

        }

        [HttpPost]
        public async bool PostGeneratorStatus(bool powerIsOn)
        {
            // return true/false depending on powerIsOn
        }
    }
}