MQTT Sensor won't read topic

Configuration
1

I have a json file published to my MQTT broker.
In MQTT Explorer here I see this data:

image
image987×432 25.6 KB

I am trying to create a mqtt sensor and attributes for this.

  - platform: mqtt
    name: "ABB Last Updated"
    state_topic: "abb/abbusage"
    device_class: timestamp
    value_template: "{{ value_json.updated }}"
    json_attributes_topic: "abb/abbusage"

But I just see this:
image

What am I doing wrong??

2

Fixed it by publishing to broker with a retain message!

image