curl https://zeplo.ai/api/conversations/1 \
  -H "x-api-key: YOUR_API_KEY" \
  -H "x-api-secret: YOUR_API_SECRET" \
  -H "x-channel-id: YOUR_CHANNEL_ID"

{
  "success": true,
  "data": {
    "id": 1,
    "channelId": "647015955153740",
    "contactId": 5,
    "contact": {
      "id": 5,
      "name": "John Doe",
      "phone": "919876543210",
      "email": "john@example.com",
      "avatar": null
    },
    "status": "open",
    "assignedTo": 2,
    "assignedToName": "Agent Smith",
    "lastMessage": "Hello, I need help",
    "lastMessageAt": "2026-01-15T10:30:00Z",
    "unreadCount": 3,
    "tags": ["support", "billing"],
    "metadata": {},
    "automationStatus": null,
    "createdAt": "2026-01-14T08:00:00Z",
    "updatedAt": "2026-01-15T10:30:00Z"
  }
}