curl -X PATCH https://api.mailofly.com/topics/top_123 \
  -H "Authorization: Bearer mf_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Product Updates & Changelog"
  }'

{
  "data": {
    "id": "top_123",
    "name": "Product Updates & Changelog",
    "description": "Weekly digests on new features and product improvements"
  }
}