Azure Event Hubs client
curl \ -H "Authorization: Bearer $ACCESS_TOKEN" \ /providers/Microsoft.EventHub/operations
curl \
-H "Authorization: Bearer $ACCESS_TOKEN" \
/subscriptions/{subscriptionId}/providers/Microsoft.EventHub/namespacescurl \
-H "Authorization: Bearer $ACCESS_TOKEN" \
/subscriptions/{subscriptionId}/providers/Microsoft.EventHub/sku/{sku}/regions