mnm json add to order

{
    "line_items": [
                {
                    "product_id": 10,
                    "variation_id": 12,
                    "quantity": 3,
                    "mnm_configuration": [
                        {
                            "product_id": 99,
                            "variation_id": 100,
                            "quantity": 3
                        },
                        {
                            "product_id": 199,
                            "variation_id": 200,
                            "attributes": [
                                {
                                    "name": "pa_color",
                                    "value": "blue"
                                }
                            ],
                            "quantity": 3
                        }
                    ]
                }
    ]
}