sequelize.js deep save/update model instance

You need to call update on the instance of the db model:

for eg: 

const address= {

"addressInfo": {

        "permanent": {

            "district": "Morang",

            "city": "Biratnagar",

            "wardNo": "03",

            "toleName": "Gaurigunj"

        },

        "current": {

            "district": "Kathmandu",

            "city": "Lazimpat",

            "wardNo": "02",

            "toleName": "Thamel"

        }

    },

};
to update  district of permanent object call

await address.addressInfo.permanent.update({
  district:"dolakha",
});