title: How to import Users into Firebase authentication with multiple attributes
body: <p>I'm transferring a large SQL database to firebase. I'm converting SQL to JSON and importing it into firebase. I have ran into a problem with the user table. I would like to import them into firebase authentication, but the user table looks like this</p>
  
  <p><strong>JSON format:</strong></p>
  
  <pre><code>"members": [
              {
                  "memb_num": "38803",
                  "memb_email": "****@gmail.com",
                  "memb_firstName": "**** ",
                  "memb_lastName": "****",
                  "memb_company": "*****",
                  "memb_street1": "***** Road",
                  "memb_street2": "",
                  "memb_city": "Duarte",
                  "memb_stateNum": "5",
                  "memb_zip": "91010",
                  "memb_country": "United States",
                  "memb_phone": "619-925-0051",
                  "memb_passwd": "5b387bd93ec6ae3f",
                  "memb_passhint": "",
                  "memb_passTemp": "none",
                  "memb_communicate": "Receive E-mails",
                  "memb_boxNum": "5417",
                  "memb_boxSize": "large",
                  "memb_acctType": "PLUS",
                  "memb_24access": "No",
                  "memb_payDue": "0000-00-00",
                  "memb_termLength": "12",
                  "memb_forms": "received",
                  "memb_newMailNotify": "1",
                  "memb_acctClose": "2019-02-02",
                  "memb_added": "2016-02-02",
                  "memb_lastOn": "2018-02-07 14:52:13",
                  "memb_access": "customer",
                  "isTestAccount": "No"
              }
  ]
  </code></pre>
  
  <p>I have a few questions. </p>
  
  <ol>
  <li><p>Will firebase Authentication accept all of this data or do I need to restructure it where only the email, password and uuid are present? I have over 30k members, so the easier the solution the better.</p></li>
  <li><p>What do I do about the password hash? This is what exporting it from the SQL database gives will it work once imported into firebase authentication?</p></li>
  </ol>