{
  "type": "insufficient-funds",
  "title": "Insufficient Funds",
  "status": 402,
  "extensions": {
    "balance": {
      "type": "string"
    },
    "required": {
      "type": "string"
    },
    "currency": {
      "type": "string"
    },
    "topUpUrl": {
      "type": "string"
    }
  }
}