curl --request GET \
  --url https://my.cald.ai/client/api/v1/campaigns/{campaignId}/details \
  --header 'Authorization: <api-key>'

{
  "campaignId": "<string>",
  "name": "<string>",
  "listId": "<string>",
  "agentId": "<string>",
  "status": "<string>",
  "stats": {
    "totalCalls": 123,
    "completedCalls": 123,
    "failedCalls": 123,
    "pendingCalls": 123,
    "pickedUpCalls": 123,
    "ivrCalls": 123,
    "voicemailCalls": 123,
    "unansweredCalls": 123,
    "disconnectedCalls": 123
  },
  "calls": [
    {
      "callId": "<string>",
      "direction": "<string>",
      "from": "<string>",
      "to": "<string>",
      "completed": true,
      "result": "<string>",
      "createdAt": "<string>",
      "completedAt": "<string>",
      "transcripts": [
        {
          "role": "<string>",
          "content": "<string>"
        }
      ],
      "callLength": 123,
      "recordingUrl": "<string>"
    }
  ]
}