issue can't receive data after success login razor page ?

public async Task OnPost()
{
    UserLoginViewModel loginview = new UserLoginViewModel();
    loginview.UserID = User.UserName;
    loginview.Password = User.vPassword;
    loginview.Environment = "PY";
    loginview.IsUserVerify = false;

    var json = JsonSerializer.Serialize(loginview);
    var content = new StringContent(json, Encoding.UTF8, "application/json");
    request.Content = content;
    request.Headers.Add("App-Source", "ADCPORTAL");
    var response = await SendAsync(request);
    if (response.IsSuccessStatusCode)
    {
        var responseJson = await response.Content.ReadAsStringAsync();
        var responseData = JsonSerializer.Deserialize(responseJson);

        if (responseData.message == "success" && responseData.status == true)
        {
            var userID = responseData.data.userID;
            var userName = responseData.data.userName;
            var userRole = responseData.data.userRole;
            // Access other properties as needed
        }
    }
}

public class ApiResponse
{
    public string message { get; set; }
    public bool status { get; set; }
    public UserData data { get; set; }
    public string statusCode { get; set; }
}

public class UserData
{
    public string userID { get; set; }
    public string userName { get; set; }
    public string userRole { get; set; }
    public string environment { get; set; }
}