Request preferences mercado pago

{
    "external_reference": 19,
    "items": [
        {
            "id": 12015,
            "title": "TENIS JORDAN 1 MID WHITE BLACK ",
            "quantity": 1,
            "unit_price": 8490.0,
            "currency_id": "MXN"
        },
        {
            "id": 13728,
            "title": "TENIS BALENCIAGA GRAFFITI SPEED GRAY",
            "quantity": 1,
            "unit_price": 13468.0,
            "currency_id": "MXN"
        }
    ],
    "statement_descriptor": "Sneakerstore Mercado Pago App móvil Android",
    "payer": {
        "name": "Jay",
        "surname": "",
        "email": "nosaj_1793@hotmail.com"
    },
    "back_urls": {
        "success": "succespaymentmovil",
        "failure": "failpaymentmovil",
        "pending": "pendingpaymentmovil"
    },
    "address": {
        "zip_code": "01600",
        "street_name": "Plaza metropoliiii",
        "street_number": "999"
    },
    "date_created": null,
    "additional_info": "Pago generado desde la app sneakerstore Android el día 20-10-2021 a las 13:41",
    "marketplace": "Sneakerstore Mercado Pago App móvil Android"
}