Sockiet.io in SWIFT 3 -> Node.js (Hieroglyphs instead of Cyrillic chars)

Good day! I'm trying to send msg via socket.io from swift 3 to my node server. Everything ok until i'm trying to send msg with Cyrillic chars -> as a result i get a Hieroglyphs on server.

app:

let msgSocket:Parameters = ["opid": self.msgList[row].sitter_id, "myid": self.msgList[row].client_id, "msg": msgText.text]
print(msgText.text)

Please help

via Konstantin Kovalenko