How to implement row level access control in PostgreSQL using Sequelize?

I am building a multi-tenant backend using Node, Express, PostgreSQL and Sequelize. All of my tenant’s data is stored in the same table. Right now, I am using the WHERE clause to filter data and restrict one tenant’s data from others but I would like to add another layer of security using the row-level access control feature of PostgreSQL. I found this article very helpful but it does not cover the implementation in NodeJS.