Saved Games Data Google Play Games Serivces Unity - unity3d

Question

I've successfully logged in with Google Play services in Unity, but I have a problem now that i have a class that contains some data like this:
public static class GameData
{
public static Dictionary<string, object> Name_Dic = new Dictionary<string, object>()
{
{"laura",""},
{"steph ",""},
{"Ryan",""},
};
public static Dictionary<string, string> Dialogs_Dic = new Dictionary<string, string>()
{
{"A1", "Hello"},
{"A2", "Nice"},
{"A3", "Test"},
};
public const int nbrTotal_Int = 2;
public const int TestNumber_Int = 5;
}
I have to save these data to the Google Cloud and after that load them from cloud, but i m confused i don't understand if i have to convert the dictionary in the GameManager class into String and then in to Bytes[] in order to save them in the Google Cloud or what can i do exactly. and the int variables i should convert them into string then into bytes[]. i ve searched into the internet and i can't found an explanation or tutorial for that and in the official documentation or the samples in the documentation it is not clear what can i do. Can you please help me please. Thanks a lot
Update
Hello,
Thanks for your answer, i ve written a code that let me save these variables to Google Cloud, here it is a part of the serialization the dictionary and the ints. is it correct like this. thanks for your answer.
using UnityEngine;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
public class Connect : MonoBehaviour
{
public Dictionary Name_Dic = new Dictionary()
{
{"laura",""},
{"steph ",""},
{"Ryan",""},
};
public Dictionary Dialogs_Dic = new Dictionary()
{
{"A1", "Hello"},
{"A2", "Nice"},
{"A3", "Test"},
};
public int nbrTotal_Int = 2;
public int TestNumber_Int = 5;
public void WriteFunction() {
ISavedGameMetadata currentGame = null;
Action<SavedGameRequestStatus, ISavedGameMetadata> writeCallback =
(SavedGameRequestStatus status, ISavedGameMetadata game) => {
Debug.Log(" Saved Game Write: " + status.ToString());
};
// CALLBACK: Handle the result of a binary read
Action<SavedGameRequestStatus, byte[]> readBinaryCallback =
(SavedGameRequestStatus status, byte[] data) =>
{
Debug.Log(" Saved Game Binary Read: " + status.ToString());
if (status == SavedGameRequestStatus.Success)
{
try {
BinaryFormatter bf = new BinaryFormatter();
FileStream file = File.Open(Application.persistentDataPath + "/gameInfo.dat",
FileMode.Open);
GameData data = new GameData();
// Two Dictionary
data.Name_Dic = Name_Dic;
data.Dialogs_Dic = Dialogs_Dic;
// Two Int
data.nbrTotal_Int = nbrTotal_Int;
data.TestNumber_Int = TestNumber_Int;
bf.Serialize(file, data);
file.Close();
} catch (Exception e) {
Debug.Log(" Saved Game Write: convert exception");
}
WriteSavedGame(currentGame, data, writeCallback);
}
};
}
}
[Serializable]
public class GameData
{
public Dictionary Name_Dic = new Dictionary()
{
{"laura",""},
{"steph ",""},
{"Ryan",""},
};
public Dictionary Dialogs_Dic = new Dictionary()
{
{"A1", "Hello"},
{"A2", "Nice"},
{"A3", "Test"},
};
public int nbrTotal_Int = 2;
public int TestNumber_Int = 5;
}``