curl -X GET "https://api.bulkclix.com/api/v1/sms-api/contact/getGroups" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Accept: application/json"

{
  "message": "Group Fetched Successfully",
  "data": [
    {
      "id": "7a8b9c0d-1e2f-4a3b-8c4d-5e6f7a8b9c0d",
      "name": "VIP customers",
      "group_icon": "group_icon_1",
      "contacts_count": 128,
      "created_at": "2026-01-12T08:00:00.000000Z"
    }
  ]
}