curl --request GET \
  --url https://api.fact0.io/api/v1/spans/{spanID}

{
  "span": {
    "id": "<string>",
    "execution_id": "<string>",
    "parent_span_id": "<string>",
    "caused_by_span_ids": [
      "<string>"
    ],
    "name": "<string>",
    "started_at": "2023-11-07T05:31:56Z",
    "ended_at": "2023-11-07T05:31:56Z",
    "metadata": {}
  },
  "events": [
    {
      "id": "<string>",
      "execution_id": "<string>",
      "span_id": "<string>",
      "sequence_number": 123,
      "event_type": "<string>",
      "timestamp": "2023-11-07T05:31:56Z",
      "payload": {}
    }
  ]
}