For some reason, this is not sending anything that I can see with

smalltest.py

# I feel like I should be able to see this with
# $ sudo salt-run state.event swi/autoscale/highstate
# But I'm not seeing anything.

def success_message(minion_name):
    import salt.client
    import json
    __opts__ = salt.config.minion_config('/etc/salt/minion')
    caller = salt.client.Caller(mopts=__opts__)
    caller.cmd('event.send', 'swi/autoscale/highstate', json.dumps({"success": minion_name}))
    caller.cmd('event.send', 'swi/autoscale/highstate', data={"success": minion_name})
    caller.cmd('event.send', 'swi/autoscale/highstate', {"success": minion_name})

success_message("test")