post https://inbound-analytics.pixlee.com/events/widgetVisible
This event should be fired for any page on which a widget can be seen in the viewport.
{
"uid": "d284fb3c-5c29-e316-ed71-8ce7852f8e50", //required, any unique string that tracks the user currently browsing
"parentURL": "https://referral-url.com", //optional but recommended, the URL on which the user loaded the widget
"API_KEY": "abcdefg", //required, the Pixlee ACCOUNT PRIVATE API KEY
"widget": "Horizontal", //optional but recommended, the style of widget. recommended options are Horizontal, Photowall, Mosaic, Coverflow, Vertical.
"album_id": 12345, //required, the Pixlee album id from which you are displaying content
"photos": "134827,34824,234957" //'album_photo_id's joined with a comma
}