Creates a new user

• Email is required when ContactMethod is 'Email'
• PhoneNumber is required when ContactMethod is 'PhoneNumber'
• BusinessUnitAccess.Values should be a list of Business Unit Ids when BusinessUnitAccess.Type is 'SelectedBusinessUnits'
• BusinessUnitAccess.Values should be null when BusinessUnitAccess.Type is 'AllBusinessUnits'
• JobAccess.Values should be null when JobAccess.Type is 'AllJobs'

        If creating a duplicate user with the Parent-Child feature, the following fields will all be synced from any existing duplicates:
        <ul><li>First Name</li><li>Last Name</li><li>Phone Number</li><li>Email</li><li>Contact Method</li><li>Allow Phone Number Login</li><li>Exclude From External Authentication</li></ul>
        For help with authorization, please visit https://developer.hcssapps.com/getting-started/request-tokens