Replace the {DEVICE_LABEL} and {VARIABLE_LABEL} with the unique label of the device and the variable to subscribe for retrieving values update. If the specified Device or Variable do not exist, you will not able to establish the subscription with it.
/v1.6/devices/{DEVICE_LABEL}/{LABEL_VARIABLE}/lv
mosquitto_sub
-h "industrial.api.ubidots.com"
-t "/v1.6/devices/weather-station/temperature/lv"
-u "BBFF-Rfcgaxns6HlVb155WA0RhSY85xNDmB"
-p 1883
-q 1