Automation yaml syntax error

Hi there, im trying to make an automation to use with HA ios App using this guide

- id: '1597258014342'
  alias: gates
  description: ''
  trigger:
  - platform: webhook
    webhook_id: gateshook
  condition: []
  action:
  - data:
      entity_id: switch.sonoff_1000351bb9
    entity_id: switch.sonoff_1000351bb9
    service: switch.turn_on
- id: '1597595035406'
  alias: garagehook
  description: ''
  trigger:
  - platform: webhook
    webhook_id: garagehook
  condition: []
  action:
  - data: {}
    entity_id: switch.sonoff_1000357c8f
    service: switch.turn_on

  - alias: Gates
    trigger:
     - platform: event
       event_type: ios.action_fired
       event_data:
       actionName: 'Gates'
    action:
      service: switch.turn_on
      entity_id: switch.sonoff_1000351bb9

and i get the error with the las automation that

Invalid config for [automation]: [trigger] is an invalid option for [automation]. Check: automation->action->1->trigger

I can’t get my brain to it, what automation should i write so that an action in the Homeassistant ios APP would launch correctly

HA ios App has the following and i cant edit anything there.