curl --request GET \
  --url https://api.example.com/singers

[
  {
    "name": "<string>",
    "speaker_uuid": "<string>",
    "styles": [
      {
        "name": "<string>",
        "id": 123,
        "type": "talk"
      }
    ],
    "version": "<string>",
    "supported_features": {
      "permitted_synthesis_morphing": "ALL"
    }
  }
]