add push message notification in angular js application

Question

Hello

i have one applicationin angular js 1.x and back-end is web api.

we have adde PWA feature so it could install on the mobile device also.

it is simple web application.

i want to add push notification in application.

we have one data entry screen when user submit data from this screen it saves in databse, now i want to send notification alsoto the users which has added this application in their mobile device and also to all login user.

please let me know how can i do, or share some sample.

thanks.