In the era of deep mediation, winning core traffic users has become the key to community management. Based on social media digital technology, community managers act as trust agents for users and capital, establishing behavioral order and habits among community users through rituals and rules. Simultaneously, community managers build emotional connections based on a sense of belonging through interactions with users and their digital labor. In knowledge-based communities on social media platforms, community managers connect four main entities: social media platforms, capital providers, paying users, and regular users. Through multidimensional interactions with each entity, they construct a diverse, symbiotic, and dynamically developing community economic ecosystem.