curl --request POST \
  --url https://api.example.com/agents/conversations/spans \
  --header 'Content-Type: application/json' \
  --data '
{
  "project_id": "<string>",
  "conversation_ids": [
    "<string>"
  ],
  "started_after": "2023-11-07T05:31:56Z",
  "started_before": "2023-11-07T05:31:56Z"
}
'

{
  "conversations": [
    {
      "conversation_id": "<string>",
      "spans": [
        {
          "duration_ms": 123,
          "operation_name": "<string>",
          "span_id": "<string>",
          "trace_id": "<string>"
        }
      ],
      "spans_feedback": [
        {
          "trace_id": "<string>",
          "ratings": [
            {
              "name": "<string>",
              "value": 123,
              "confidence": 123,
              "reason": "<string>"
            }
          ],
          "tags": [
            "<string>"
          ]
        }
      ]
    }
  ]
}