Reactjs React Native 中的 JSON Fetch 解析问题

我目前正在try 在react native中迭代json.JSON有一个数量可变的返回，其格式非常奇怪，不幸的是，我不能做太多改变JSON的创建方式，所以我希望能得到关于如何正确解析它的建议.

下面是获取json并显示值的代码:

import React, { useState, useEffect } from "react";
import { ActivityIndicator, FlatList, SafeAreaView, StatusBar, StyleSheet, Text, View, TouchableOpacity } from "react-native";

const App = () => {
  const [selectedId, setSelectedId] = useState(null);
  const [isLoading, setLoading] = useState(true);
  const [data, setData] = useState({});
  const [counter, setCounter] = useState(0);

  const getJSON = async () => {
    const response = await fetch('URL');
    const json = await response.json();
    setData(json.Items);
    setCounter(json.Count);
    setLoading(false);
  }

  useEffect(() =>{
    getJSON();
  }, []);

  return (
    <View style={{ flex: 1, padding: 24 }}>
    {isLoading ? <ActivityIndicator/> : (
      <FlatList
        data={data}
        keyExtractor={({ Items }, index) => id}
        renderItem={({ item }) => (
          <Text>{item.Items}</Text>
        )}
      />
    )}
  </View>
  );
};

下面是获取的JSON()

{
    "Count": 1,
    "Items": [{
        "building": {
            "S": "Wash"
        },
        "mac": {
            "S": "FF:FF:FF:FF:FF:FF"
        },
        "name": {
            "S": "test asset"
        },
        "asset_id": {
            "S": "01"
        },
        "floor": {
            "S": "1"
        },
        "room": {
            "S": "102"
        }
    }],
    "ScannedCount": 1
}

任何帮助都将不胜感激.我对解析JSON仍然很陌生