curl https://api.tradly.app/v1/lists \
  -H "Authorization: Bearer YOUR_PUBLISHABLE_OR_SECRET_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

{
  "status": true,
  "data": {
    "total_records": 2,
    "page": 1,
    "lists": [
      {
        "id": "list_abc123",
        "name": "Newsletter Subscribers",
        "description": "Opted-in newsletter contacts",
        "member_count": 342,
        "created_at": 1723068000,
        "updated_at": 1723068000
      },
      {
        "id": "list_def456",
        "name": "Spring Campaign 2026",
        "description": null,
        "member_count": 88,
        "created_at": 1723154400,
        "updated_at": 1723154400
      }
    ]
  }
}