AssetData.cs

using System;
using System.Collections.Generic;

[Serializable]
public class AssetData
{
    public int Id { get; set; }
    public string Description { get; set; }
    public string Image { get; set; }
    public Price Price { get; set; }

    public AssetData(int id, string description, string image, Price price)
    {
        Id = id;
        Description = description;
        Image = image;
        Price = price;
    }
}

public class Price
{
    public List<RegionPrice> Regions { get; set; }

    public Price(List<RegionPrice> regions)
    {
        Regions = regions;
    }
}

public class RegionPrice
{
    public string Name { get; set; }
    public string Currency { get; set; }
    public string Symbol { get; set; }
    public decimal Amount { get; set; }

    public RegionPrice(string name, string currency, string symbol, decimal amount)
    {
        Name = name;
        Currency = currency;
        Symbol = symbol;
        Amount = amount;
    }
}