curl --request POST \
  --url 'https://api.wavix.com/v1/call/{uuid}/play?appid=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "audio_file": "https://examples.com/audio.wav",
  "delay_before_playing": 1000
}
'

{
  "success": true
}