trigger for on join in laravel echo server with

I am following this tutorial in, vue.js and Laravel using laravel echo server

I have the following code in Laravel-echo-server with

window.Echo.private('Room Name')    
.on('Channel Name', (e) => {
    //Code to receive the message

Do we have any option such that when new user join, the members get notified. I tried to search for on OnJoin, but seems like there is none.

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    How can I print a enter image description here

    My Controller is redirecting to this View with flash data(data from a table row). How do I print for example, just the "titulo" or "resumo"?

    Or, instead of sending all the information from a table row to a single variable, do I have to send separately into different variables?

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