Get all Parking Users

curl --request GET \
  --url https://partner.staging.ezprk.dev/billing-accounts/{baId}/parking-users \
  --header 'Authorization: Bearer <token>'

{
  "firstElementIndex": 123,
  "elementsInPage": 123,
  "elementsTotal": 123,
  "parkingUsers": [
    {
      "id": 123,
      "firstName": "<string>",
      "lastName": "<string>",
      "phoneNumber": "<string>",
      "email": "<string>",
      "costCenter": "<string>",
      "accountStatus": "<string>"
    }
  ]
}