Iniciar transacción

curl --location '/transfer/v1/init' \
--header 'Private-Merchant-Id;' \
--header 'Content-Type: application/json' \
--data '{
    "token": "string",
    "amount": {
        "subtotalIva": 0,
        "subtotalIva0": 0,
        "iva": 0,
        "extraTaxes": {
            "iac": 0,
            "tasaAeroportuaria": 0,
            "agenciaDeViaje": 0
        }
    },
    "metadata": {
        "key0": "string",
        "key1": "string",
        "key2": "string"
    },
    "fullResponse": "v2",
    "webhooks": {
        "events": [
            "approvedTransaction"
        ],
        "headers": {
            "headers": [
                {
                    "label": "json",
                    "value": "12"
                }
            ]
        },
        "urls": [
            "string"
        ]
    }
}'