curl --request POST \
  --url https://api.topmediai.com/v1/cover \
  --header 'Content-Type: multipart/form-data' \
  --form 'singer_id=<string>' \
  --form youtube_url= \
  --form tran=0 \
  --form 'file=<string>' \
  --form is_custom_singer=false \
  --form file.0='@example-file'

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>",
      "input": "<unknown>",
      "ctx": {}
    }
  ]
}