curl -X POST "https://server.smartlead.ai/api/v1/email-accounts/tag-manager?api_key=YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"id": 1, "name": "VIP", "color": "#FF5733"}'

{
  "ok": true,
  "data": {
    "id": 1,
    "name": "VIP",
    "color": "#FF5733"
  }
}

{
  "message": "Invalid API Key"
}