image-background-remover (submit task)

curl -X POST "https://gptproto.com/api/v3/gptproto/image-background-remover" \
  -H "Authorization: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "image": "The URL of the image to generate an image from.",
  "enable_base64_output": false,
  "enable_sync_mode": false
}'

{
  "error": {
    "message": "Invalid signature",
    "type": "401"
  }
}