make json object laravel code example

Example 1: convert json string to json object in laravel

$manage = json_decode($request->stdin, true);
 print_r($manage);

Example 2: laravel json eloquent

protected $casts = [
    'birthday' => 'date:Y-m-d',
    'joined_at' => 'datetime:Y-m-d H:00',
];