Example implementation of a player save manager using Playfab.

PlayfabSaveManager.cs

using System;
using System.Collections.Generic;
using UnityEngine;
using PlayFab;
using PlayFab.ClientModels;

public class PlayFabManager : MonoBehaviour
{
    private const string PlayFabTitleId = "YOUR_PLAYFAB_TITLE_ID"; // Замените на ваш Title ID
    private string backupSaveData;

    [Serializable]
    public class SaveData
    {
        public int level;
        public int experience;
        public Dictionary<string, int> inventory;
    }

    void Start()
    {
        PlayFabSettings.TitleId = PlayFabTitleId;
        Login();
    }

    private void Login()
    {
        var request = new LoginWithCustomIDRequest
        {
            CustomId = SystemInfo.deviceUniqueIdentifier,
            CreateAccount = true
        };
        PlayFabClientAPI.LoginWithCustomID(request, OnLoginSuccess, OnLoginFailure);
    }

    private void OnLoginSuccess(LoginResult result)
    {
        Debug.Log("Login successful!");
        LoadPlayerData();
    }

    private void OnLoginFailure(PlayFabError error)
    {
        Debug.LogError("Error during login: " + error.GenerateErrorReport());
    }

    private void LoadPlayerData()
    {
        var request = new GetUserDataRequest();
        PlayFabClientAPI.GetUserData(request, OnDataReceived, OnDataError);
    }

    private void OnDataReceived(GetUserDataResult result)
    {
        if (result.Data != null && result.Data.ContainsKey("SaveData"))
        {
            backupSaveData = result.Data["SaveData"].Value;
            SaveData saveData = JsonUtility.FromJson<SaveData>(backupSaveData);
            OnAccountLoaded(saveData);
        }
        else
        {
            Debug.Log("No save data found, initializing new save.");
            SaveData newSaveData = new SaveData();
            OnAccountLoaded(newSaveData);
        }
    }

    private void OnDataError(PlayFabError error)
    {
        Debug.LogError("Error retrieving player data: " + error.GenerateErrorReport());
    }

    public void UpdateSave(string jsonSaveData)
    {
        if (!string.IsNullOrEmpty(backupSaveData))
        {
            BackupSaveData(backupSaveData);
        }

        var request = new UpdateUserDataRequest
        {
            Data = new Dictionary<string, string>
            {
                { "SaveData", jsonSaveData }
            }
        };
        PlayFabClientAPI.UpdateUserData(request, OnDataUpdated, OnDataUpdateError);
    }

    private void BackupSaveData(string jsonSaveData)
    {
        // Здесь можно добавить логику для бекапа сейва, например, отправка на сервер или сохранение локально
        Debug.Log("Backup save data: " + jsonSaveData);
    }

    private void OnDataUpdated(UpdateUserDataResult result)
    {
        Debug.Log("Save data successfully updated.");
    }

    private void OnDataUpdateError(PlayFabError error)
    {
        Debug.LogError("Error updating save data: " + error.GenerateErrorReport());
    }

    private void OnAccountLoaded(SaveData data)
    {
        // Ваш код для обработки загруженного аккаунта
        Debug.Log("Account loaded with data: " + JsonUtility.ToJson(data));
    }
}