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

{
  "campaigns": [
    {
      "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
      }
    }
  ]
}