JsonTest.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;

[Serializable]
public class mazeCube
{
    public int preFabType;
    public Vector3 pos;
    public Vector3 rotation;
}

[Serializable]
public class mazesData
{
    public mazeCube[] datas;
}


public class JsonTest : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        mazeCube cube = new mazeCube();
        cube.preFabType = 2;
        cube.pos = Vector3.back;
        mazesData mazeDatas = new mazesData();
        mazeDatas.datas = new mazeCube[] { cube };
        string json = JsonUtility.ToJson(mazeDatas);
        print(json);
        mazesData mazeDatas2= JsonUtility.FromJson<mazesData>(json);
    }

    // Update is called once per frame
    void Update()
    {
        
    }
}