The 'external_id' field
The uniqueness of this field across all events the integration has sent is NOT enforced. If you send multiple feed events with the same external_id, it is undefined which event's event_id will be returned by the Get Event Id By External Id endpoint.
The 'body' field
The body field when sending a feed event is a JSON object that must conform to the Blink CardKit spec. Find out how to build a CardKit card here.
Sending feed events with Attachments or Images
If your feed event contains an
imagesection, you can host your content on Blink rather than using external URLs. To do this you send your attachment when calling the Send Feed Event endpoint, click here to find out how.