Part of MQTT payload as sensor

Configuration
1

How can I use some of the info inside the payload as in this picture as its own sensor?

image
image628×987 47.7 KB

2

Try to create a sensor template such as

- platform: mqtt
  Name: Array Used Space
  state_topic: "home assistant/unraid"
  value_template: "{{ value_json.arrayUsedSpace }}"