TheKingsRace/Assets/Scripts/UI/Lobby/LobbyPlayerState.cs

using MLAPI.Serialization;

public struct LobbyPlayerState : INetworkSerializable {
    public ulong ClientId;
    public string PlayerName;
    public bool IsReady;

    public LobbyPlayerState(ulong clientId, string playerName, bool isReady)
    {
        ClientId = clientId;
        PlayerName = playerName;
        IsReady = isReady;
    }

    public void NetworkSerialize(NetworkSerializer serializer)
    {
        serializer.Serialize(ref ClientId);
        serializer.Serialize(ref PlayerName);
        serializer.Serialize(ref IsReady);
    }
}