curl --request GET \
  --url https://api.paycrest.io/v1/provider/rates/{token}/{fiat} \
  --header 'API-Key: <api-key>'

{
  "status": "success",
  "message": "Operation successful",
  "data": {
    "marketRate": 123,
    "minimumRate": 123,
    "maximumRate": 123
  }
}