sms.SMSContact

{
    "created_at": "string",
    "email": "string",
    "first_name": "string",
    "id": "string",
    "is_subscribed": true,
    "last_name": "string",
    "metadata": {
        "property1": "string",
        "property2": "string"
    },
    "organization_id": "string",
    "phone_number": "string",
    "updated_at": "string"
}