post
https://api.ultroncloud.com/usr/v5/GetGroupEndpointStates
Retrieves the current states of endpoints, online status, and configuration data for all devices within a specific location. This includes real-time device states (on/off, brightness, temperature, etc.), connectivity status, and last known configuration settings. Both snList and endpointList are mutually exclusive. If both are omitted, all endpoints for the group will be returned.