Mqtt how to extract data

hello .
i have problems to extract data from a MQTT string.i need to get out the temperature from this string
utetemp = [{“temp”:2},{“temp”:1}] this is how i get it into HA i want only the numeric values (to display in lovelace
(values comes from a kepserverEX 6 mqqt to HA
anyone know how to do this ?

Crete mqtt sensor

See MQTT Sensor - Home Assistant