BulkCreateSubscribersRequest

{
    "subscribers": [
        {
            "email": "john.doe@yourcompany.com",
            "firstName": "John",
            "lastName": "Doe",
            "isConfirmed": true,
            "tags": [],
            "customFields": {
                "latest_destination": "Lisbon",
                "trips": 3
            }
        }
    ]
}