cancelledcurl --location --request DELETE 'http://localhost:3000/instances//messages/pending' \
--header 'x-api-key: <api-key>'{
"instanceId": "018f47ac-7a5b-7cc2-9f9a-9b8d7f6e5d4c",
"cancelledInDatabase": 2,
"queue": {
"supported": true,
"purgedActive": 2,
"cancelledScheduled": 0
}
}