curl --request GET \
  --url https://api.example.com/api/v1/orders/summary \
  --header 'X-API-Key: <api-key>'

{
  "totalOrders": 123,
  "fixtureCount": 123,
  "exchangeCount": 123,
  "totalStake": 123,
  "totalMatched": 123,
  "totalOpen": 123,
  "filledCount": 123,
  "cancelledCount": 123,
  "openCount": 123
}