Modified ossobuffo's script at https://gist.github.com/ossobuffo/d5b2826b2a3e57057bfc

gistfile1.php

<?php
/*
 * This script presumes that you place the following in composer.json:
 * {
 *   "require": {
 *       "guzzlehttp/guzzle": "~4.0"
 *    }
 * }
 * and then run composer install in that directory.
 */

use GuzzleHttp\Client;

/* ==== CONFIGURATION SECTION ==== */
// What org do you want to sync?
$org = 'EDGE-ORG';

// What are the credentials for an orgadmin within that org?
$user = 'EMAIL';
$pass = 'PASSWORD';

// What's the connection string for the database?
// Hint: look in ~/.drush/pantheon.aliases.drushrc.php

//$connection = 'mysql://pantheon:[email protected]:31337/pantheon';
$connection = 'mysql://USERNAME:PASSWORD@localhost/DATABSE_NAME';

/* ==== END CONFIGURATION ==== */

$parts = parse_url($connection);
$db_user = $parts['user'];
$db_pass = $parts['pass'];
$db_host = $parts['host'];
$db_port = $parts['port'];
$db_name = ltrim($parts['path'], '/');
$dsn = "mysql:host=$db_host;port=$db_port;dbname=$db_name";
$PDO = new PDO($dsn, $db_user, $db_pass, array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION));

require_once 'vendor/autoload.php';

$client = new Client([
  'base_url' => ['https://api.enterprise.apigee.com/v1/o/{org}/', ['org' => $org]],
  'defaults' => [
    'headers' => ['Accept' => 'application/json'],
    'auth' => [$user, $pass],
    'allow_redirects' => true,
  ],
]);

// Export missing mint developers
$tmp_file = '/tmp/missing-mint-developers.txt';
exec('echo "Contains missing developers - ' . date("F j, Y, g:i a")  .'" > '. $tmp_file);

// Get latest email
$email = $PDO->query('SELECT mail FROM users ORDER by uid DESC LIMIT 1')->fetchColumn();

// when kicking off manually pick a users name from beginning of user's table
$email = '[email protected]';
$response = $client->get('developers?count=9999&startKey=' . $email);
//$response = $client->get('developers');

$edge_developers = json_decode($response->getBody(), TRUE);
$total = count($edge_developers);

while ($total > 1) {
  $j = 0;
  $drupal_developers = array();

  $uid = $PDO->query('SELECT value FROM sequences')->fetchColumn();

  $mail_query = $PDO->prepare('SELECT uid FROM users WHERE mail = :mail OR name = :name');
  $users_query = $PDO->prepare('INSERT INTO users (uid, name, pass, mail, created, status, init, uuid) VALUES (:uid, :name, :pass, :mail, :created, :status, :init, :uuid)');
  $fn_data_query = $PDO->prepare('INSERT INTO field_data_field_first_name (entity_type, bundle, deleted, entity_id, revision_id, language, delta, field_first_name_value) VALUES (\'user\', \'user\', 0, :uid, :vid, \'und\', 0, :name)');
  $fn_rev_query = $PDO->prepare('INSERT INTO field_revision_field_first_name (entity_type, bundle, deleted, entity_id, revision_id, language, delta, field_first_name_value) VALUES (\'user\', \'user\', 0, :uid, :vid, \'und\', 0, :name)');
  $ln_data_query = $PDO->prepare('INSERT INTO field_data_field_last_name (entity_type, bundle, deleted, entity_id, revision_id, language, delta, field_last_name_value) VALUES (\'user\', \'user\', 0, :uid, :vid, \'und\', 0, :name)');
  $ln_rev_query = $PDO->prepare('INSERT INTO field_revision_field_last_name (entity_type, bundle, deleted, entity_id, revision_id, language, delta, field_last_name_value) VALUES (\'user\', \'user\', 0, :uid, :vid, \'und\', 0, :name)');

  foreach ($edge_developers as $edge_developer) {
    $j++;

    try {
      $response = $client->get('developers/' . rawurlencode($edge_developer));
      $details = json_decode($response->getBody(), TRUE);
      $mail_query->execute([':mail' => $edge_developer, ':name' => $details['userName']]);
      $row = $mail_query->fetchObject();

      if ($row) {
        fputs(STDERR, "[$j/$total] Skipping $edge_developer; already in database.\n");
        continue;
      } else {
        echo "[$j/$total] Processed $edge_developer\n";

        echo "uid = $uid \n";
        echo "name = " . $details['userName'] . "\n";
        echo "pass = " . user_password() . "\n";
        echo "mail = " . $edge_developer . "\n";
        echo "status = " . $details['status'] . "\n";

        $users_query->execute([
          ':uid' => $uid,
          ':name' => $details['userName'],
          ':pass' => user_password(),
          ':mail' => $edge_developer,
          ':status' => ($details['status'] == 'active' ? 1 : 0),
          ':init' => $edge_developer,
          ':created' => time(),
          ':uuid' => GUID(),
        ]);

        $fn_data_query->execute([
          ':uid' => $uid,
          ':vid' => $uid,
          ':name' => $details['firstName'],
        ]);

        $fn_rev_query->execute([
          ':uid' => $uid,
          ':vid' => $uid,
          ':name' => $details['firstName'],
        ]);

        $ln_data_query->execute([
          ':uid' => $uid,
          ':vid' => $uid,
          ':name' => $details['lastName'],
        ]);

        $ln_rev_query->execute([
          ':uid' => $uid,
          ':vid' => $uid,
          ':name' => $details['lastName'],
        ]);

        echo "[$j/$total] Processed $edge_developer\n";
        $uid++;

        $PDO->exec('UPDATE sequences SET value = ' . $uid);
      }
    } catch
    (Exception $e) {
      exec('echo "$edge_developer . " >> ' . $tmp_file);
      echo "#### missing developer in mint >> " . $edge_developer . "\n";
    }
  }

  // Get new developer list - count
  $email = $PDO->query('SELECT mail FROM users ORDER by uid DESC LIMIT 1')->fetchColumn();
  $response = $client->get('developers?count=9999&startKey=' . $email);
  $edge_developers = json_decode($response->getBody(), TRUE);
  $total = count($edge_developers);
  echo "\n ###### NEW TOTAL: $total #######\n";
  //  if ($uid > 6465) { $total = 1; }

}

echo "Done!\n";

function user_password() {
  $allowable_characters = 'abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789';
  $len = strlen($allowable_characters) - 1;
  $pass = '';
  for ($i = 0; $i < 10; $i++) {
    $pass .= $allowable_characters[mt_rand(0, $len)];
  }
  return $pass;
}

function GUID()
{
  if (function_exists('com_create_guid') === true)
  {
    return trim(com_create_guid(), '{}');
  }

  return sprintf('%04X%04X-%04X-%04X-%04X-%04X%04X%04X', mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(16384, 20479), mt_rand(32768, 49151), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535));
}