Zendesk Recipe: Notify customers in messaging chats about solving the ticket

Create a trigger action with the following payload to call Delayer webhook:

{
    "delay": 0,
    "message": {
        "author": {
            "type": "business"
        },
        "content": {
            "text": "This ticket was marked as Solved",
            "type": "text"
        }
    },
    "ticket_id": "{{ticket.id}}"
}

where 
delay is the delay in seconds. 
message structure is in Sunshine conversation format.
text is the message text. 

You can see the list of Zendesk placeholders here:
https://support.zendesk.com/hc/en-us/articles/4408886858138-Placeholder-reference-for-business-rules