Home Assistant sensor and automation .yaml to toggle a SonOff light with a 433mhz RF Bridge w/tasmota for the buttons...

HomeAssistantRfButtonStuff.yaml

Given this topic make sensor/button unique in this working example any button on that topic will fire the automation.
tele/homeamation/sonoff02/STATE {"Time":"2018-12-10T16:30:27","Uptime":"30T22:46:46","Vcc":3.121,"POWER":"OFF","Wifi":{"AP":1,"SSId":"ADP","BSSId":"F8:32:E4:AE:00:F8","Channel":3,"RSSI":100}}
# commented lines are failed attempts

in sensors....
#
#                           button
#
# 12/9/2018

  - platform: mqtt
    name: Button01
    initial_state: true
    optimistic: true
    force_update: true
    state_topic: "tele/homeamation/rf/sonoff/RESULT"
    # value_template: "{{ value_json['RfReceived'].Data }}"
    # value_template: 'value_json.RfReceived.Data'
    # payload_on: '00C824'
    # payload_off: '00C824'
    
in automation...
    
    # jha 12/9/2018 from Home Assistant discourse channel Malixlizard 
#
# Button 1 automation
#

- alias: Button 1 pushed
  trigger:
    - platform: state
      entity_id: sensor.Button01
      # to: '00C824'
      # payload: '00C824'

  action:
  #  - condition: template
  #       value_template: '{{ value_json.RfReceived.Data == '00C824' }}'
    - service: switch.toggle
      entity_id: 
        - switch.back_lights_front