curl --request GET \
  --url https://api.example.com/api/permissions \
  --header 'Authorization: Bearer <token>'

{
  "permissions_items": [
    {
      "entity": {
        "id": "<string>",
        "email": "<string>",
        "display_name": "<string>",
        "authorization_provider": "Firebase",
        "authorization_type": "group"
      },
      "permissions": [
        "<string>"
      ]
    }
  ],
  "possible_roles": [
    "<string>"
  ],
  "possible_permissions": [
    "<string>"
  ]
}