Stuck with Notify Rest

Configuration
13

I gave up on the notify.rest, just couldn’t get it to work ended up going with shell command and wget

configuration.yml

shell_command:
  save_track: /bin/sh -c '/usr/bin/wget "{{url}}" -O /dev/null'

automation.yml

- id: '1526541171994'
  alias: Track Dugite
  trigger:
    platform: mqtt
    topic: owntracks/dugite/mobile
  action:
    service: shell_command.save_track
    data_template:
       url: "https://example.tld/apps/phonetrack/logGet/################################/dugite?lat={{ trigger.payload_json.lat|string }}&lon={{ trigger.payload_json.lon|string }}&bat={{ trigger.payload_json.batt|string }}&timestamp={{ trigger.payload_json.tst|string }}"

This was my final attempt with notify.rest:

- id: '1526541171994'
  alias: Track Dugite
  trigger:
    platform: mqtt
    topic: owntracks/dugite/mobile
  action:
    service: notify.track_dugite
    data_template:
     message: "test&lat={{ trigger.payload_json.lat|string }}&lon={{ trigger.payload_json.lon|string }}&bat={{ trigger.payload_json.batt|string }}&timestamp={{ trigger.payload_json.tst|string }}"

*Edit: added /bin/sh -c because of this