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

{
  "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>"
}