How can I delete socket.id from array belongs to user

Im developing real time chat, Im trying to overcome the multiple tabs generates unique socket id issue.

I want to delete only one socket.id from user list.

here is my users array looks like :

{
  '115': [ 'HWac6RFhKhVWzByOAAAD', '0ETr8Jr0rpt64nqlAAAF' ],
  '116': [ 'RrkyrEIQl78X25XLAAAB' ]
}

My code :

socket.on("disconnect", (reason) => {
      console.log('user ' + socket.id + ' disconnected');
      delete users[socket.id];
      
      })

But this delete all socket.ids, i want only delete one socket id which exists to user reference.

Here userID is the id which i store all unique socket ids, when each tab opened.

I want to delete one socket id from the list which belongs to the user at a time.

How i can do that ?