/api/sites/
/api/sites/{id}/
/api/sites/{id}/readers/
/api/sites/{id}/readers/{id}/

[Route("api/[controller]")]
[ApiController]
public class SitesController : ControllerBase {
    [HttpGet("{id:length(24)}")]
    public ActionResult<Site> Get(string id) {}



}

[Route("{id:length(24)}/[controller]}")]
[ApiController]
public class ReadersController {
    [HttpGet]
    public string Get() => "test";
}