Retrieve a list of currently supported currencies by the currency API
https://api.upcdatabase.org/currency/symbols
The response contains an array of all the currently supported currencies in JSON format.
{ "success": true, "timestamp": 1569279710, "symbols": { "USD": "US dollar", "EUR": "Euro", "JPY": "Japanese yen", "GBP": "Pound sterling", "AUD": "Australian dollar", "CAD": "Canadian dollar", "CHF": "Swiss franc", "CNH": "Chinese renminbi", "SEK": "Swedish krona", "NZD": "New Zealand dollar" } }