System.FormatException при передаче JSON - C#

Формулировка задачи:

Передаю строку с json ответом в процедуру и в итоге получаю ошибку "Входная строка имела неверный формат." Выглядит это примерно так

procedure(Encoding.ASCII.GetString(byte[] answer))

содержание answer

{"server":631227,"photo":"[{"photo":"8fbc038174:w","sizes":[["s","631227852","5fdce","sDEfKiKXavg",54,75],
["m","631227852","5fdcf","FVrYftJo0bI",93,130],["x","631227852","5fdd0","8qGQghd3Oqw",430,604],
["y","631227852","5fdd1","QEvIU3YfF-k",575,807],["z","631227852","5fdd2","YNOGWtCf9WI",770,1080],
["w","631227852","5fdd3","T-_zmF-3tTo",1000,1402],["o","631227852","5fdd4","ieRi0HU8TRg",130,183],
["p","631227852","5fdd5","FHzJaiZn8vI",200,281],["q","631227852","5fdd6","etZVRYrA5nU",320,449],
["r","631227852","5fdd7","MVN6Bxg5HHc",510,715]],
"kid":"affa1004c2c3dd219666a55ab4de55e4","debug":"xswmwxwywzwwwowpwqwrw"}]","hash":"e148ddff6c1166399f1e3d82f58d1d39"}

Решение задачи: «System.FormatException при передаче JSON»

textual
                            Листинг программы 
                        

                            {
"server":631227,
"photo":
[
    {
        "photo":"8fbc038174:w",
        "sizes":
        [
            ["s","631227852","5fdce","sDEfKiKXavg",54,75],
            ["m","631227852","5fdcf","FVrYftJo0bI",93,130],
            ["x","631227852","5fdd0","8qGQghd3Oqw",430,604],
            ["y","631227852","5fdd1","QEvIU3YfF-k",575,807],
            ["z","631227852","5fdd2","YNOGWtCf9WI",770,1080],
            ["w","631227852","5fdd3","T-_zmF-3tTo",1000,1402],
            ["o","631227852","5fdd4","ieRi0HU8TRg",130,183],
            ["p","631227852","5fdd5","FHzJaiZn8vI",200,281],
            ["q","631227852","5fdd6","etZVRYrA5nU",320,449],
            ["r","631227852","5fdd7","MVN6Bxg5HHc",510,715]
        ],
        "kid":"affa1004c2c3dd219666a55ab4de55e4",
        "debug":"xswmwxwywzwwwowpwqwrw"
    }
],
"hash":"e148ddff6c1166399f1e3d82f58d1d39"
}
                        