test1/public/drupal-8.3.1/modules/entity/composer.json

{
  "name": "drupal/entity",
  "type": "drupal-module",
  "description": "Provides expanded entity APIs, which will be moved to Drupal core one day.",
  "homepage": "http://drupal.org/project/entity",
  "license": "GPL-2.0+",
  "require": {
    "drupal/core": "~8.1"
  }
}