public function up(): void 	{ 		Schema::create('user_activities', static function (Blueprint $table): void { 			$table->uuid('id')->primary(); 			$table->foreignUuid('user_id')->constrained('users')->cascadeOnDelete(); 			$table->uuidMorphs('item'); 			$table->nullableUuidMorphs('model'); 			$table->string('ip_address', 45)->nullable(); 			$table->unsignedTinyInteger('type')->default(0); 			$table->json('updated_fields')->nullable(); 			$table->timestamps(); 			$table->index(Model::CREATED_AT); 		}); 	}