curl --request GET \
  --url https://api.snitcher.com/v1/workspaces/{workspaceUuid}/custom-fields \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": [
    {
      "identifier": "industry",
      "key": "industry",
      "name": "Industry",
      "entity_type": "organisation",
      "type": "text",
      "description": "The primary industry of the company.",
      "group": "custom",
      "is_visible": true,
      "source": "manual",
      "rules": [
        {}
      ],
      "is_system": false,
      "options": [
        {}
      ]
    }
  ]
}