curl --request POST \
  --url https://console.vast.ai/api/v0/network_disk/ \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "machine_id": 123,
  "machine_ids": [
    123
  ],
  "mount_point": "<string>",
  "disk_id": 123
}'

{
  "success": true,
  "disk_id": 2
}