curl --request POST \
  --url https://app.manuscritten.com/api/public/card \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "campaignId": "7f127892-71ab-45a6-9145-3565848b55ab",
  "name": "Alfredo",
  "surname": "Villacastín",
  "address": "C. de José María Lacarra de Miguel, 250",
  "zip": "50008",
  "city": "Zaragoza",
  "province": "",
  "country": "ES",
  "variables": {
    "Canal Previo": "el Tech Show"
  }
}
'

{
  "success": true,
  "cardId": "c92a7c5e-13bd-4b3c-b2de-dc80475c0f3a"
}