curl --request POST \
  --url https://api.heify.com/list-participants \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{}'

{
  "data": {
    "items": [
      {
        "participant_id": "1f77a5f5-ac38-42c6-999d-45f02d11d121",
        "tag": "juan pedro",
        "metadata": {
          "empresa": "leroy",
          "language": "español",
          "role": "manager"
        },
        "created_at": "2026-03-21T13:23:18.069124+00:00",
        "updated_at": "2026-03-21T13:23:18.088360+00:00"
      },
      {
        "participant_id": "580cc0e1-3a60-49d9-8e20-1745252f0aae",
        "tag": "Pedro Borrado",
        "metadata": {
          "email": "ejep@gg.com"
        },
        "created_at": "2026-03-03T19:30:35.377560+00:00",
        "updated_at": "2026-03-03T19:30:35.397110+00:00"
      }
    ],
    "count": 2
  }
}