As of my last knowledge update in January 2022, I do not have specific information about the details of Lionel Messi’s property holdings, including an M-shaped villa with three helipads worth $400 million. Lionel Messi is a professional footballer known for his achievements on the field, and details about his private properties may not be readily available or publicly disclosed

It’s essential to note that property information, especially that related to celebrities, can be subject to privacy and confidentiality. If there have been developments or new information about Lionel Messi’s properties since my last update, I recommend checking the latest news sources or official statements for the most accurate and current details.