curl --request GET \
  --url https://services.leadconnectorhq.com/objects \
  --header 'Authorization: Bearer <token>' \
  --header 'Version: <version>'

{
  "objects": [
    {
      "id": "661c06b4ffde146bdb469442",
      "standard": false,
      "key": "custom_objects.pet",
      "labels": {
        "singular": "Pet",
        "plural": "Pets"
      },
      "locationId": "Q9DT3OAqEXDLYuob1G32",
      "primaryDisplayProperty": "custom_objects.pet.name",
      "dateAdded": "2023-11-07T05:31:56Z",
      "dateUpdated": "2023-11-07T05:31:56Z",
      "description": "These are non vaccinated pets",
      "type": "The Object type can either USER_DEFINED or SYSTEM_DEFINED"
    }
  ]
}