How to deserialize only child object

{
 "props":{
        "pageProps": {
            "dehydratedReduxStateKey": {
                "studyModesCommon": {
                    "studiableData": {
                        "studiableItems": [
                            {""item1"": ""data1""},
                            {""item2"": ""data2""},
                            {""item3"": ""data3""}
                        ]
                    }
                }
            }
        }
    }
}