curl --request GET \
  --url 'https://api.fastforex.io/fx/pairs/quote-sizes?api_key='

{
  "sizes": {
    "IRRUSD": "100000,",
    "VNDUSD": "10000,",
    "LKRNZD": "1000,",
    "DOPGBP": "100,"
  },
  "ms": 12
}