async Task<string> GenerateJwtTokenAsync(User user)

Govor.Application/Interfaces/AdminsStuff/UsersService.cs

@@ -26,4 +26,11 @@ public class UsersService : IUsersAdministration
             return new List<User>();
         }
     }
+
+    public async Task<User> GetUserById(Guid userId)
+    {
+        var result = await _usersRepository.FindByIdAsync(userId);
+            
+        return result;
+    }
 }

Govor.Application/Interfaces/Authentication/IJwtService.cs

@@ -4,5 +4,5 @@ namespace Govor.API.Services.Authentication.Interfaces;
 
 public interface IJwtService
 {
-    string GenerateJwtToken(User user);
+    Task<string> GenerateJwtTokenAsync(User user);
 }

Govor.Application/Interfaces/IUsersAdministration.cs

@@ -5,4 +5,5 @@ namespace Govor.API.Services.AdminsStuff.Interfaces;
 public interface IUsersAdministration
 {
     Task<List<User>> GetAllUsersAsync();
+    Task<User> GetUserById(Guid userId);
 }