How do I use curl to suppress alerts

I want to use curl to suppress alerts.  I've tried invoking SuppressAlerts however I'm not able to get it working.

URL https://:17778/SolarWinds/InformationService/v3/Json/Invoke/Orion.AlertSuppression/SuppressAlerts

json body [ ["swis://server/Orion/Orion.Nodes/NodeID=7924"] ]

I get a null response.  Can someone provide an example of how to use curl to invoke SuppressAlerts?