{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "AccountDetails",
  "type": "object",
  "properties": {
    "accountNumber": {
      "type": "string",
      "description": "Unique identifier for the Primary Account Number of the card."
    },
    "cardLast4": {
      "type": "string",
      "description": "The last four digits of the card number."
    },
    "cardExpiryDate": {
      "type": "string",
      "description": "The expiry year and month of the card in YYMM format."
    },
    "cardBin": {
      "type": "string",
      "description": "The first digits of the card number."
    }
  }
}