callBackUrl parameter to receive automatic notifications when the validation phrase is ready, rather than polling the status endpoint.curl --location 'https://api.kie.ai/api/v1/voice/validate' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"voiceUrl": "https://example.com/audio/user_voice.mp3",
"vocalStartS": 0,
"vocalEndS": 10,
"language": "en",
"callBackUrl": "https://example.com/callback/suno/voice_prepare"
}'{
"code": 200,
"msg": "success",
"data": {
"taskId": "xxx_task_id_xxx"
}
}