Authorization: Bearer ********************curl --location -g --request PUT 'https://awqacore01.crexendocloud.com/ns-api/v2/domains/{{domain}}/users/{{user}}/messagesessions//addparticipant' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
"participant": "UID or DID of participant"
}'{
"code": 202,
"message": "Accepted"
}