Why do you sign a rental contract online in Beijing, and do you have to pay a handling fee for the official account of WeChat?

The reason why the official WeChat account paid the rental fee when signing the online rental contract in Beijing is that, according to the relevant information, the rental fee is the fee paid for the rental registration and filing, and it is charged at the time of filing, which is compliant. 50 yuan's handling fee is required for the leased residential building area below 30 square meters, and 80 yuan's handling fee is required for the leased residential building area above 30 square meters.