WebhookOutIncomingMessageDetailContactPayload

{
    "channel": "WHATSAPP",
    "msisdn": "+390000000000",
    "waBsuid": "IT.13491208655302741918",
    "waParentBsuid": "IT.ENT.11815799212886844830",
    "telegramUid": 123456789,
    "firstname": "Mario",
    "lastname": "Rossi",
    "selfContact": true
}