List Organizations

{
  "items": [
    {
      "id": "org_01KKSMB47VYGW97GFE67VGDK7M",
      "name": "Acme Corp",
      "description": "Main customer account",
      "is_default": true,
      "created_at": null,
      "updated_at": null
    }
  ],
  "total": 0,
  "page": 1,
  "size": 1,
  "pages": 0
}

{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string",
      "input": null,
      "ctx": {}
    }
  ]
}