curl --request GET \
  --url https://api.upon-ai.com/api/v1/calls \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "calls": [
    {
      "callId": "<string>",
      "callType": "<string>",
      "status": "<string>",
      "agentId": "<string>",
      "agentVersion": 123,
      "metadata": {},
      "optOutSensitiveDataStorage": true,
      "accessToken": "<string>",
      "expiresAt": "2023-11-07T05:31:56Z",
      "webCallUrl": "<string>",
      "uponai_dynamic_variables": {}
    }
  ],
  "pagination": {
    "page": 123,
    "limit": 123,
    "total": 123
  }
}