I need help to replicate how I consume my API that currently I have in ASP.NET MVC in Blazor Webasse

I'm new to Blazor Webassembly App currently working with ASP.NET MVC and I need help to replicate how I consume my ASP.NET API in Blazor Webassembly App.

I am going to leave how I have configured it in my current project so that you know how I have everything in ASP.NET and I would like to know how I have to do the same in Blazor Webassembly App.

In my current project I have a JSON file that I have created with the AuthUrl and the ClientID:

<appSettings>
  <!-- Application Connection Settings -->

  <add key="URL_Resource" value="https://xxxxxx/v1/api/" />

  <!-- Application Client ID to direct to HIS -->
  <add key="ClientId" value="XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXX" />

</appSettings>

Then I have a controller called BaseController where I pass it through Json parameters.

 public abstract class BaseController : Controller
    {

        private IResource _Resource;
       
        {
            get
            {
                var appKey = ConfigurationManager.AppSettings["ClientId"];
                if (_Resource== null)
                    _Resource= new EurekaResource(ConfigurationManager.AppSettings["URL_Resource"], appKey);

                return _Resource;
            }
        }

Finally I have a class called IResource where I have my endpoints.

  public class IResource
    {
        private readonly string _baseUrl;
        private readonly string _appkey;


        public IResource(string baseUrl, string appkey)
        {
            if (string.IsNullOrWhiteSpace(baseUrl)) throw new ArgumentException("BaseUrl cannot be null or empty.");

            if (appkey == null) throw new ArgumentNullException("The appkey argument cannot be null.");

            _baseUrl = baseUrl;
            _appkey = appkey;
        }

       
        public async Task<Patient> GetPatientByIdAsync(long patientId)
        {
            try
            {
                return await Get<Patient>(string.Format("patient/{0}", patientId.ToString())).ConfigureAwait(false);
            }
            catch (Exception)
            {

                throw;
            }            
        }

My models is a DTO.dll file where I add it to the project in the dependencies.

Is someone can Guide me how to do the same in Blazor would be great!