create_payment

curl -X POST \
  'https://api.mercadopago.com/checkout/preferences?access_token=TEST-3538639200668192-112919-746c1b4f7ccbbbc466c4946c9fe77759-190220543' \
  -d '{
        "items": [
            {
            "title": "Dummy Item",
            "description": "Multicolor Item",
            "quantity": 1,
            "currency_id": "ARS",
            "unit_price": 10.0
            }
        ]
    }'