How to use vManage REST APIs to configure and monitor DNS Security (Umbrella) policy on SDWAN edge router and explore Umbrella reporting APIs to get further details about DNS requests statistics.
Cisco SDWAN Security APIs
How to use vManage REST APIs to retrieve the firewall inspect counter values, store these firewall inspect count values in a Time Series Database (TSDB) Influx DB and plot it on to Grafana Dashboard
Suchandan's blog 