public class User
{
    public int Id { get; set; }
    public string DisplayName { get; set; }
    public int Reputation { get; set; }
    public string ProfileImageUrl { get; set; }
    public DateTimeOffset CreationDate { get; set; }
}

public class Post
{
    public int Id { get; set; }
    public string Title { get; set; }
    public string Body { get; set; }
    public int Score { get; set; }
    public DateTimeOffset CreationDate { get; set; }
    public int OwnerUserId { get; set; }
    public User OwnerUser { get; set; }
    public IReadOnlyList<Comment> Comments { get; set; }
}

public class Comment
{
    public int Id { get; set; }
    public string Text { get; set; }
    public DateTimeOffset CreationDate { get; set; }
    public int UserId { get; set; }
    public User User { get; set; }
    public int PostId { get; set; }
    public Post Post { get; set; }
}

static IContractResolver CreateResolver()
{
    return new Builder()
        .With<User>("users")
            .Id(nameof(User.Id))
            .Ignore(nameof(User.PasswordHash)
            .HasMany<Post>("posts")
                .Template("/v1/users/{id}/posts", "id", resource => resource.Id)
        .With<Post>("posts")
            .Id(nameof(Post.Id))
            .BelongsTo<User>(nameof(Post.OwnerUser))
                .Via(nameof(Post.OwnerUserId))
                .Template("/v1/users/{id}", "id", resource => resource.OwnerUserId)
            .HasMany<Comment>(nameof(Post.Comments))
                .Template("/v1/posts/{id}/comments", "id", resource => resource.Id)
        .With<Comment>("comments")
            .Id(nameof(Comment.Id))
            .BelongsTo<User>(nameof(Comment.User))
                .Via(nameof(Comment.UserId))
                .Template("/v1/users/{id}", "id", resource => resource.UserId)
            .BelongsTo<Post>(nameof(Comment.Post))
                .Via(nameof(Comment.PostId))
                .Template("/v1/posts/{id}", "id", resource => resource.PostId)
        .Build();
}

static void ConfigureFormatters(HttpConfiguration configuration)
{
    configuration.Formatters.Remove(configuration.Formatters.XmlFormatter);
    configuration.Formatters.Remove(configuration.Formatters.JsonFormatter);

    configuration.Formatters.Add(new JsonApiMediaTypeFormatter(CreateResolver()));
}

var response = await _httpClient.GetAsync($"v1/users/{id}", cancellationToken);
response.EnsureSuccessStatusCode();

return await response.Content.ReadAsJsonApiAsync<UserResource>(CreateResolver());

var response = await _httpClient.GetAsync($"v1/posts?skip={skip}&take={take}", cancellationToken);
response.EnsureSuccessStatusCode();

return await response.Content.ReadAsJsonApiManyAsync<PostResource>(_resourceContractResolver);