OJ CUSTOMER by-agency return

[
  {
    "id": "6b4f4c458e0d2a8d8084de54117a95343d958c91",
    "contactinfo": "Changed information about a customer",
    "firstname": "CUSTOMER",
    "phone": "0123456789",
    "lastname": "LAMBDA",
    "email": "customer.lambda@openjet.com",
    "reservations": []
  },
  {
    "id": "c6a49d4ca857c8ca5e126404e69e979f880489e8",
    "contactinfo": "Information about a customer",
    "firstname": "CUSTOMER2",
    "phone": "0123456789",
    "lastname": "LAMBDA",
    "email": "customer.lambda2@openjet.com",
    "reservations": []
  }
]