How do i Filter a four levels array? : I have an object like this:

    let accessArray = [ 
                { id: 1, restrictions: 
                         [
                           canAccess: true,
                           users: [ 
                                    name: 'user'
                                    accessLevel: [ 10, 20, 30 ]
                                   ]
                          ]
                },
                { id: 2, restrictions: 
                         [
                           canAccess: true,
                           users: [ 
                                    name: 'user2'
                                    accessLevel: [ 10, 20 ]
                                   ]
                          ]
                }
             ]

I would like to know how I filter to get only the `accessArray` items that contains the `accessLevel` **30** which in the example is the item with `id = 1`.Thanks.