curl --request POST \
  --url https://api-dev.vmonster.io/v1/streams \
  --header 'Content-Type: multipart/form-data' \
  --header 'x-api-key: <api-key>' \
  --form 'aiavatar_id=<string>' \
  --form language=ko \
  --form position_x=123 \
  --form position_y=123 \
  --form scale=123 \
  --form background=@example-file

{
  "session_id": "5761ae64-30fd-4d1d-bab1-a15f8475e95d",
  "stream_id": "46a09b1d-bc0d-4316-b929-874fa4787cfc",
  "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiI1ZDEyMzQtZTlmZi00Y2IyLTg3YWQtNGRlOGFhYmNkZWYxIiwibmFtZSI6IuuwlOyXkCIsImlhdCI6MTY4OTAyMzQ1NiwiZXhwIjoxNzE1NTg3NDU2fQ.dGhpcy1pc0EtcmFuZG9tLXNpZ25hdHVyZS1leGFtcGxlMTIz"
}