curl --request PATCH \
  --url https://{subdomain}.mihu.ai/api/v1/agents/{uuid}/voice-advanced \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "voice_advanced": {
    "stability": 0.7,
    "speed": 1
  }
}
'

{
  "success": true,
  "message": "Voice advanced settings updated successfully",
  "data": {
    "voice_uuid": "16a8b0dd-3a15-4e39-8cc0-384196da952b",
    "fields": [
      {
        "key": "stability",
        "value": 0.7
      },
      {
        "key": "similarity",
        "value": 0.9
      },
      {
        "key": "style",
        "value": 0
      },
      {
        "key": "speed",
        "value": 1
      },
      {
        "key": "speaker_boost",
        "value": true
      }
    ]
  }
}