vimeo_player-1.0.0-rc1/vimeo_player.routing.yml

vimeo_player.vimeo_event:
  path: '/ajax/vimeo-player/event'
  defaults:
    _controller: '\Drupal\vimeo_player\Controller\VimeoPlayerController::event'
    _title: 'Vimeo Event'
  requirements:
    _access: 'TRUE'
    _format: 'json'
    _method: 'POST'