title: How can I create url-friendly Id for AWS Cognito users?
body: <p>I am developing the serverless application with AWS Cognito, DynamoDB and Lambda.
  I need some user-friendly ids for URL. 
  Is it possible to generate a number only ids with Cognito User Pool? If not what is the best way to generate it manually in lambda?</p>
  
  <p>Thanks in advance.</p>