In Hangzhou, Zhejiang, when the social security base is 19,300 yuan, the individual's deduction amount is calculated based on different insurance types and their respective contribution rates. In total, the individual needs to pay approximately 2,123 yuan per month. Here's a breakdown by insurance type:

1. Endowment Insurance: The individual contribution rate is 8%. So, the monthly deduction is ​
   ×8%=
   yuan. This part of the payment accumulates for future pension benefits.

2. Medical Insurance: The individual contribution rate is 2%. Thus, the monthly deduction is ​
   ×2%=
   yuan. It is used to cover medical expenses in case of illness.

3. Unemployment Insurance: The individual contribution rate is 0.5%. So, the monthly deduction is ​
   ×0.5%=96.5
   yuan. This provides a certain financial support during periods of unemployment.

4. Work - related Injury Insurance and Maternity Insurance: Employees do not contribute to these two types of insurance. They are entirely borne by the employer.

In conclusion, when the social security base in Hangzhou is 19,300 yuan, the individual's total monthly social security deduction is mainly composed of endowment, medical, and unemployment insurance contributions, amounting to about 2,123 yuan. This amount ensures that employees can enjoy corresponding social security benefits in the future.