How can I save and load the last loaded scene in Json?

Hi guys, so I want to save and load the last loaded scene that I was in in my project, so when I click load it starts me in the scene I last saved in.

I already did this with Playerprefs but I want to do it with Json. This is how I’ve done it until now:

my save:

void OnApplicationQuit()
{
    PlayerPrefs.SetInt("SavedScene", SceneManager.GetActiveScene().buildIndex);
    SaveGame();
}

from continue button in the menu:

public void OnContinueGameClicked()
{
    DisableMenuButtons();
    DataPersistenceManager.instance.SaveGame();
    SceneManager.LoadSceneAsync(PlayerPrefs.GetInt("SavedScene"));
}

from my load save button:

public void OnSaveSlotClicked(SaveSlot saveSlot)
{
    DisableMenuButtons();      DataPersistenceManager.instance.ChangeSelectedProfileId(saveSlot.GetProfileId());    
    if(!isLoadingGame)
    {
        DataPersistenceManager.instance.NewGame();
    }
    SceneManager.LoadSceneAsync(PlayerPrefs.GetInt("SavedScene"));
}

You can try to use a JSON package like Newtonsoft Json Unity Package | Newtonsoft Json | 3.0.2

One example on how to convert an object to and from JSON is in the documentation:

You can use the JSon utility. Create a class that stores data to be saved.

[System.Serializable]
	public class SavedData
	{
		public static string path = Application.persistentDataPath + "/SaveData.json";
		public int savedScene;
	}
	void SaveCurrentScene()
	{
		SavedData savedData = new SavedData ();
		savedData.savedScene = SceneManager.GetActiveScene ().buildIndex;
		string json = JsonUtility.ToJson (savedData);
		System.IO.File.WriteAllText(SavedData.path, json);
	}

	void LoadLastScene()
	{			
		string jsonData = System.IO.File.ReadAllText (SavedData.path);
		SavedData savedData = JsonUtility.FromJson<SavedData> (jsonData);		
		SceneManager.LoadSceneAsync(savedData.savedScene);	
	}

I would recommend Newtonsoft’s JSON utility. I actually created a video tutorial on this should anyone find it helpful. You can store basically any kind of data, and it even has its own version of player prefs using JSON!