PHP userialize error using accent

I have an error when executing & # 39; unserialize & # 39 ;, when there are characters with accentuation.

serialized:
& # 39; A: 12: {s: 12: "REDE_INTERNA", N; s: 16: "JA_TESTOU_COOKIE", N; s: 9: "TYPE_AUTH", N; s: 10: "PERFILAUTH"; i: 33; s: In the event that an error occurs in the system, it must be taken into account that, in the event of an error, 8: "NOMSAUTH", N; s: 8: "GRUPAUTH"; s: 4: "APRE"; s: 15: "REDEINTERNAAUTH"; s: 3, "YES"; s: 9: "EXTRAAUTH"; a: 2: {s: 9: "qtd_aviso"; s: 1: "0"; s: 13: "qtd_pendence"; s: 1: "0";}} & # 39;

& # 39; unserialize (): Error at offset 222 of 377 bytes in & # 39;

If I use the unserialize () in a non-accent work. Can someone help me?