{
    "apis": [],
    "fields": [
        {
            "name": "amount",
            "type": "int"
        },
        {
            "name": "currency",
            "type": "string"
        },
        {
            "name": "display_amount",
            "type": "string"
        },
        {
            "name": "expiration",
            "type": "datetime"
        }
    ]
}