{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Receipt Card",
  "description": "Payment card details displayed on the receipt.",
  "type": "object",
  "properties": {
    "last_4_digits": {
      "description": "Card last 4 digits.",
      "type": "string"
    },
    "type": {
      "description": "Card Scheme.",
      "type": "string"
    }
  }
}