curl --request POST \
  --url https://api.sandbox.saalal.com/v1/cards/link \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "identifier": 8840822604,
  "card_user_reference": "577f7a27-0749-4c7c-89a3-bcedca3452e9"
}'

{
  "message": "Card currently being generated",
  "statusCode": 200,
  "data": {
    "card": {
      "identifier": 8840822604,
      "reference": "d282e4a6-1fb6-4827-a6ae-a780263287d7",
      "card_number": null,
      "card_brand": "Visa",
      "card_type": "virtual",
      "cvv2": null,
      "expiry": null,
      "balance": 0,
      "status": "issued"
    }
  }
}