How to work with socketio server and send "emit" request

Hey, i can connect to my socketio server, but how can i send a requst with params?
My socketio listen event

socket.on('init', ( data ) => {
    console.log('init', data);
});

on client side i tryed to do this

 _socket.OnMessage += (sender, e) =>
{
    Console.WriteLine("message: {0} {1}", e.IsBinary, e.Data);
    _socket.Send(MakePacket("init", new Init
        {
            key = "1",
            room = "eq",
            type = "s"
        }.ToJson())
    );
};
private string MakePacket(string e, string data)
{
    return new[] {e, data}.ToJson();
}

so i send json to server ["init", {"type":"s","key":"1","room":"eq"}]
But server wont react at this packet.
What i do wrong? Thank you for any reply.

No repository file or test is named. Start with the websocket-sharp usage around _socket.OnMessage, _socket.Send, and MakePacket, then compare the emitted payload with the server's expected protocol. Done means documenting the supported packet format and a verified example.