curl --request GET \
  --url https://api.zapier.com/v2/authentications \
  --header 'Authorization: Bearer <token>'

{
  "links": {
    "next": null,
    "prev": null
  },
  "meta": {
    "count": 1,
    "limit": 10,
    "offset": 0
  },
  "data": [
    {
      "type": "authentication",
      "id": "example_akLLd8kB",
      "app": "81f613aa-c98a-4383-a5fc-195e68647217",
      "is_expired": false,
      "title": "Google Sheets some.user@mycompany.example"
    }
  ]
}