Asp Net Core 2.1 - HttpContext.User returns null

I'm doing an Api Rest using asp net core 2.1 with Vue, in which I need to get the user's data that I started session. The problem is that when I enter the browser, httpContext.User does not get the data. But when I try it with Postman, he gets it. Both wear the tocken at the request.

This is my driver's code

if (!ModelState.IsValid)
                return BadRequest(ModelState);

            if (id != customers.Id)
                return BadRequest();

            DateTime dt = DateTime.Now;

            try
            {
                var user = await _userManager.GetUserAsync(HttpContext.User);

                customers.UpdatedAt = dt;
                customers.UpdatedBy = user.Email;

                _context.Entry(customers).State = EntityState.Modified;

                await _context.SaveChangesAsync();
            }

Startup.cs code

    public void ConfigureServices(IServiceCollection services)
            {
                services.AddDbContext<ApplicationDbContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("defaultConnection")));

                services.AddIdentity<ApplicationUser, IdentityRole>(options =>
                {
                    options.Password.RequiredLength = 5;

                })
                    .AddEntityFrameworkStores<ApplicationDbContext>()
                    .AddDefaultTokenProviders();

                services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
                    .AddJwtBearer(options => 
                    options.TokenValidationParameters = new TokenValidationParameters
                    {
                        ValidateIssuer = true,
                        ValidateAudience = true,
                        ValidateLifetime = true,
                        ValidateIssuerSigningKey = true,
                        ValidIssuer = "yourdomain.com",
                        ValidAudience = "yourdomain.com",                       IssuerSigningKey = new SymmetricSecurityKey(
                        Encoding.UTF8.GetBytes(Configuration["Llave_secreta"])),
                        ClockSkew = TimeSpan.Zero
                    });


                services.Configure<EmailSettings>(Configuration.GetSection("EmailSettings"));

services.AddTransient<IEmailSender, AuthMessageSender>();

                services.AddCors();

                services.AddMvc().AddJsonOptions(ConfigureJson);


                services.AddMvc();


                services.AddSession();

                // services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

                services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
            public void Configure(IApplicationBuilder app, IHostingEnvironment env, ApplicationDbContext context)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseHsts();
            }

            app.UseCors(builder => builder
                        .AllowAnyOrigin()
                        .AllowAnyMethod()
                        .AllowAnyHeader()
                        .AllowCredentials()
                        );

            app.UseSession();

            app.UseAuthentication();
            app.UseMvc();

        }