An event received from or being sent to a source.
Address routing information for the event. Save this field to external storage somewhere to later compose a proactive message to the user.
SDK thats processing the event. Will always be 'botbuilder'.
The original source of the event (i.e. 'facebook', 'skype', 'slack', etc.)
The original event in the sources native schema. For outgoing messages can be used to pass source specific event data like custom attachments.
Defines type of event. Should be 'message' for an IMessage.