How do I customize the Laravel 8 Fortify/Sanctum JSON response on Login and Register with an API Resource?

I'm using Laravel 8 Sanctum and Fortify for a single page application. What I want to do is output custom JSON (A User API resource) when the user logs in and when they register.

Here's the JSON Resource:

UserResource.php

<?php

namespace App\Http\Resources;

use Illuminate\Http\Resources\Json\JsonResource;

class UserResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return array|\Illuminate\Contracts\Support\Arrayable|\JsonSerializable
     */
    public function toArray($request)
    {
        return [
            'id' => $this->id,
            'name' => $this->name,
            'hashed_id' => $this->hashed_id
        ];    
    }
}

In the docs it looks like there's a way to do this in the boot method, potentially? But it doesn't specifically state how to customize the JSON output in the request:

{
				id: 1,
				name: 'corbin',
				hashed_id: '2kjh2kh432h48erhdfhifdhdfsfds'
}

What's the convention to do this? It's pretty routine and Im pretty surprised nothing popped out in the docs about it because most SPA's need to store info on login and register in local storage.