"Settings"
{
    "price" "200"
    "sell_price"    "100"
    "duration"  "604800"

    "Levels"
    {
        "1" // Anything here
        {
            "exp_to_add"    "2"     // Gives when player get kill
        }
        "2"
        {
            "upgrade_price" "500"
            "exp_to_add"    "4"     // Gives when player get kill
        }
        "3"
        {
            "upgrade_price" "500"
            "exp_to_add"    "7"     // Gives when player get kill
        }
    }
}