curl --request GET \
  --url https://api.getgranite.ai/api/discovered_organizations

{
  "email_address": "<string>",
  "discovered_organizations": [
    {
      "organization_id": "<string>",
      "organization_name": "<string>",
      "organization_slug": "<string>",
      "membership_type": "<string>",
      "membership_details": {}
    }
  ]
}