curl --location --request PUT '{{baseUrl}}/api/whatsapp/update-integration/123456789012345' \
--header 'Authorization: Bearer {{authToken}}' \
--header 'Content-Type: application/json' \
--data '{
  "displayName": "Weya Customer Support",
  "accessToken": "EAAGxxxxxxxxxxxxxxxxxxxxxxxx",
  "businessAccountId": "987654321098765"
}'

{
  "status": true,
  "code": 200,
  "message": "WhatsApp integration updated successfully",
  "data": {
    "_id": "6891f1d0c45d123456789abc",
    "phoneNumberId": "123456789012345",
    "phoneNumber": "+15551234567",
    "displayName": "Weya Customer Support",
    "status": "connected",
    "updatedAt": "2026-07-21T14:32:18.000Z"
  }
}