post
https://api.ultroncloud.com/usr/v5/GetBleTopology
Retrieves the topology of BLE devices and BLE Gateway with in a location
For BLE devices (connType = "BLE") returned by /usr/v5/GetGroupDevices, their online status is not available in /usr/v5/GetGroupDeviceStates. Use this API to retrieve the online state of BLE devices.