Need urgent help please, regarding saving api response in data model

Hi, I am facing some difficulties storing the response I am getting into Data Model. I am hitting the Quickbooks API to get invoices, this is the response I am getting and I want to save it in Data Model in one column

"Line": [
                {
                    "Id": "1",
                    "LineNum": 1,
                    "Description": "Rock Fountain",
                    "Amount": 275.00,
                    "LinkedTxn": [
                        {
                            "TxnId": "100",
                            "TxnType": "Estimate"
                        }
                    ],
                    "DetailType": "SalesItemLineDetail",
                    "SalesItemLineDetail": {
                        "ItemRef": {
                            "value": "5",
                            "name": "Rock Fountain"
                        },
                        "UnitPrice": 275,
                        "Qty": 1,
                        "TaxCodeRef": {
                            "value": "TAX"
                        }
                    }
                },
                {
                    "Id": "2",
                    "LineNum": 2,
                    "Description": "Fountain Pump",
                    "Amount": 12.75,
                    "LinkedTxn": [
                        {
                            "TxnId": "100",
                            "TxnType": "Estimate"
                        }
                    ],
                    "DetailType": "SalesItemLineDetail",
                    "SalesItemLineDetail": {
                        "ItemRef": {
                            "value": "11",
                            "name": "Pump"
                        },
                        "UnitPrice": 12.75,
                        "Qty": 1,
                        "TaxCodeRef": {
                            "value": "TAX"
                        }
                    }
                },
                {
                    "Id": "3",
                    "LineNum": 3,
                    "Description": "Concrete for fountain installation",
                    "Amount": 47.50,
                    "LinkedTxn": [
                        {
                            "TxnId": "100",
                            "TxnType": "Estimate"
                        }
                    ],
                    "DetailType": "SalesItemLineDetail",
                    "SalesItemLineDetail": {
                        "ItemRef": {
                            "value": "3",
                            "name": "Concrete"
                        },
                        "UnitPrice": 9.5,
                        "Qty": 5,
                        "TaxCodeRef": {
                            "value": "TAX"
                        }
                    }
                },
                {
                    "Amount": 335.25,
                    "DetailType": "SubTotalLineDetail",
                    "SubTotalLineDetail": {}
                }
]

Thanks.