v1.SMSMessage

{
    "contact_id": "contact_123",
    "created_at": "2023-06-09T10:00:00Z",
    "id": "123e4567-e89b-12d3-a456-426614174000",
    "message_body": "Hello, this is a test message",
    "recipient_phone": "+1234567890",
    "scheduled_at": "2023-06-09T15:00:00Z",
    "sender_id": "YourBrand",
    "sent_at": "2023-06-09T10:05:00Z",
    "status": "sent",
    "template_id": "tpl_123",
    "updated_at": "2023-06-09T10:00:00Z"
}