loopback/test/fixtures/user-integration-app/common/models/my-user.json

{
  "name": "myUser",
  "base": "User",
  "relations": {
    "blogs": {
      "model": "blog",
      "type": "hasMany",
      "foreignKey": "userId"
    }
  },
  "acls": [
    {
      "permission": "ALLOW",
      "principalType": "ROLE",
      "principalId": "$owner"
    }
  ]
}