{
  "code": "color",
  "label": "Color",
  "project": 1,
  "attribute_type": "select",
  "is_required": true,
  "options": ["red", "blue", "green"],
  "validation_rules": {
    "min_selections": 1,
    "max_selections": 1
  }
}

{
  "id": 1,
  "code": "color",
  "label": "Color",
  "attribute_type": "select",
  "created_at": "2024-01-01T12:00:00Z"
}