curl --request POST \
  --url https://console.vast.ai/api/v0/network_volume/ \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "disk_id": 123,
  "price_disk": 123,
  "size": 123,
  "credit_discount_max": 123,
  "end_date": 123
}
'

{
  "success": true,
  "disk_id": "created network volume ask with id 6 and size 24"
}