It means that the user belongs to the Big Data Management Center. This is because the nail group is a chat tool set up by the enterprise, nail group each member has their own role, so in the nail group to show that the user belongs to the big data management center, can help other group members quickly understand the person's position and the department. Nail is an enterprise collaboration and communication software, can help enterprises quickly establish internal organizational structure, to achieve a variety of multi-party collaboration.