3rdstage

import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.NotThreadSafe;
import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotBlank;

3rdstage

var passphrase = 'none';
var accts = personal.listAccounts;
if (accts.length == 0){

  var keys = [ 
    "ba75c5fd16ae1151dc9f961e94e219994c6335a5b4148c624142243fb76306d6",    
    "097dd6aedb87b3b5e541cfb9ef8d4beb7a66084dd80d99c2e51aeabeae320980",    
    "abae82647f5881a398f7eede8910803d65470a7cbaee9ddda90dcdcdc8dcdacf",    
    "cc1af47cbc9de0c9a1e1049c1a62ddb9e08440d16093803d74e93f1cea3458ee",    
    "3e48c4e748b8f5baf6f870c5c4d2a0147390c94e778a9ca67de945bffeb2f72a"

3rdstage

{
  "name": "Most Famous Paintings",
  "description": "Historically famous and well-knwon paintings",
  "image": "https://upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Van_Gogh_-_Starry_Night_-_Google_Art_Project.jpg/606px-Van_Gogh_-_Starry_Night_-_Google_Art_Project.jpg",
  "seller_fee_basis_points": 300,
  "fee_recipient": "0xAd7A83c471C7E050F7fC9EC2476966d920D88612"
}