curl --request GET \
  --url https://api.perplexity.ai/v1/async/sonar \
  --header 'Authorization: Bearer <token>'

{
  "requests": [
    {
      "id": "<string>",
      "created_at": 123,
      "model": "<string>",
      "started_at": 123,
      "completed_at": 123,
      "failed_at": 123
    }
  ],
  "next_token": "<string>"
}