curl --request GET \
  --url https://api.useanima.sh/v1/voice/calls \
  --header 'Authorization: Bearer <token>'

{
  "calls": [
    {
      "id": "<string>",
      "agentId": "<string>",
      "phoneIdentityId": "<string>",
      "state": "<string>",
      "from": "<string>",
      "to": "<string>",
      "startedAt": "<string>",
      "answeredAt": "<string>",
      "endedAt": "<string>",
      "endReason": "<string>",
      "durationSeconds": 123,
      "createdAt": "<string>"
    }
  ],
  "total": 123
}