Webhook

Use webhooks to be notified about new message, ack or chat update that happen in a instance_whatsapp. 
You can set a http or https url and Mercury can sends the Event object, via an HTTP POST request, to any endpoint URLs that you have defined in your account’s Webhooks settings The webhook event object have this structure:
{
    "type":"ack",
    "data":{...},
    "time":1559062461,
    "instance_number":"11223"
}
The object has these fields:
fields
type
description
type
string
type of event. Can have the following values : 
"message" if the instance have received a new message
"ack" if a message has been sent, received or read
"chatUpdate" if a chat has received an update such as changing the profile picture or the name
data
object
Can have the following values : 
if type is "message" in data there is an object like message
if type is "ack" in data there is an object like message
if type is "chatUpdate" in data there is an object like chat
time
number
is the unix timestamp in seconds when the event has been generated
instance_number
string
(like instance_whatsapp.instance_number) is the instance whatsapp which generated the event
Example for "chatUpdate" notification:
{
    "type":"chatUpdate",
    "data":
        {
            "_id":"5cebb9eb9ce23ae3e3c00510",
            "instance_number":"43279",
            "last_message_time":1558619725,
            "last_message_number":110,
            "last_message_number_id":"5cebb9eb9ce23ae3e3c004d9",
            "count_message_read":0,
            "chatId":"4433223322-1554893669@g.us",
            "name":"Group",
            "image":"https://storage.googleapis.com/393245903518/59625670_473608333182253_8099661519656058880_n.jpg",
            "metadata":{"isGroup":true,"participants":["445544333222@c.us","393519149609@c.us","393245903518@c.us"],"groupInviteLink":"https://chat.whatsapp.com/FeUFQQX23BiJVZONzVAQIu"}
        },
    "time":1559055235,
    "instance_number":"43279"
}
Example for "message" notification:
{
    "type":"message",
    "data":
        {
            "_id":"5cece1ef9ce23ae3e3cc001d",
            "message_id":"false_4437367744@c.us_3AB22E9A006308D9A806",
            "istance_number":"43279",
            "body":"https://storage.googleapis.com/393245903518/2019%252F5%252F28%252F06a6a304-bade-47f8-ad35-a14a90006dfc.jpeg",
            "body_translate":null,
            "type":"image",
            "senderName":"george",
            "fromMe":false,
            "author":"44575647748@c.us",
            "time":1559028200,
            "chatId":"44575647748@c.us",
            "messageNumber":198,
            "queueNumber":11,
            "status_queued":true,
            "status_queued_time":1559575922,
            "status_sent":null,
            "status_sent_time":null,
            "status_delivered":null,
            "status_delivered_time":null,
            "status_viewed":null,
            "status_viewed_time":null
        },
    "time":1559055235,
    "instance_number":"43279"
}
Example for "ack" notification:
{
    "type":"ack",
    "data":
        {
            "_id":"5cece1ef9ce23ae3e3cc001d",
            "message_id":"false_4437367744@c.us_3AB22E9A006308D9A806",
            "istance_number":"43279",
            "body":"https://storage.googleapis.com/393245903518/2019%252F5%252F28%252F06a6a304-bade-47f8-ad35-a14a90006dfc.jpeg",
            "body_translate":null,
            "type":"image",
            "senderName":"george",
            "fromMe":false,
            "author":"44575647748@c.us",
            "time":1559028200,
            "chatId":"44575647748@c.us",
            "messageNumber":198,
            "queueNumber":11,
            "status_queued":true,
            "status_queued_time":1559575922,
            "status_sent":true,
            "status_sent_time":1559575925,
            "status_delivered":null,
            "status_delivered_time":null,
            "status_viewed":null,
            "status_viewed_time":null
        },
    "time":1559055235,
    "instance_number":"43279"
}
​

Delete list of outbound messages queue

Try webhook

Last updated -4

fields	type	description
type	string	type of event. Can have the following values : "message" if the instance have received a new message "ack" if a message has been sent, received or read "chatUpdate" if a chat has received an update such as changing the profile picture or the name
data	object	Can have the following values : if type is "message" in data there is an object like message if type is "ack" in data there is an object like message if type is "chatUpdate" in data there is an object like chat
time	number	is the unix timestamp in seconds when the event has been generated
instance_number	string	(like instance_whatsapp.instance_number) is the instance whatsapp which generated the event