curl --request GET \
  --url https://api.withallo.com/v2/api/conversations \
  --header 'Authorization: <api-key>'

{
  "data": [
    {
      "contact_number": "+14155551234",
      "contacts": [
        {
          "id": "cnt-abc123",
          "name": "Sarah Johnson",
          "company": {
            "id": "com-xyz789",
            "name": "Acme Corp"
          },
          "deals": [
            {
              "id": "dea-def456",
              "name": "Enterprise Plan",
              "status": "open"
            }
          ]
        }
      ],
      "last_activity": "2026-04-21T14:30:00Z",
      "last_item": {
        "id": "cll-abc123",
        "type": "CALL",
        "direction": "INBOUND",
        "date": "2026-04-21T14:30:00Z",
        "summary": "Customer called about upgrading their plan.",
        "result": "ANSWERED",
        "duration": 145
      }
    }
  ],
  "pagination": {
    "page": 1,
    "size": 20,
    "total_count": 156,
    "total_pages": 8,
    "has_more": true
  }
}