curl --request POST \
  --url https://api.upon-ai.com/api/voices/clone \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form workspaceId=123 \
  --form 'voiceProvider=<string>' \
  --form 'voiceName=<string>' \
  --form 'files=<string>' \
  --form files.items='@example-file'

{
  "voiceId": "<string>",
  "name": "<string>",
  "gender": "<string>",
  "language": "<string>",
  "accent": "<string>",
  "description": "<string>",
  "provider": "<string>",
  "previewUrl": "<string>",
  "playbackOverrideUrl": "<string>",
  "tags": [
    "<string>"
  ],
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z"
}