public function rules(): array 	{ 		return [ 			'meta' => ['array'], 			'meta.user_agent' => ['nullable', 'string'], 			'meta.screen_width' => ['nullable', 'string', 'max:10'], 			'meta.screen_height' => ['nullable', 'string', 'max:10'], 			'meta.platform' => ['nullable', 'string', 'max:150'], 			'meta.browser' => ['nullable', 'string', 'max:150'], 			'meta.device' => ['nullable', 'string', 'max:150'], 		]; 	}