message.url - New Push Event Stream Property

message.url is now a supported property for push events. It enables the retrieval of the launch URL directly from your event stream payload.

If you use a different URL for web versus app audiences in the same push, use the message.app_urland message.web_url instead.

Example Event Stream body:

{
       "user_id": "{{ event.external_id }}",
       "event_id": "{{ event.id }}",
       "event": "{{ event.kind }}",
       "properties": {
         "message_id": "{{ message.id }}",
         "message_name": "{{ message.name }}",
         "message_title": "{{ message.title.en }}",
         "message_contents": "{{ message.contents.en }}",
         "message_url": "{{ message.url }}",
         "message_app_url": "{{ message.app_url }}",
         "message_web_url": "{{ message.web_url }}",
         "template_id": "{{ message.template_id }}",
         "subscription_id": "{{ event.subscription_id }}",
         "subscription_device_type": "{{ event.subscription_device_type }}",
         "source": "onesignal"
       },
       "originalTimestamp": "{{ event.datetime }}"
  }