I want to change user meta by asking user permisson

[stephanie.chamblee]

The password-change email can be sent to users who already exist. Are the admin adding the users manually or are you generating a password change ticket for existing users?:
POST/api/v2/tickets/password-change

You may find this topic answer helpful for setting up a hook that sends a password change email when a new user is created:

Sending Email Invitations For Application Signup

Hello @brady! You can accomplish this with a Post User Registration Hook and customizing the Password Change email template. In the email template section of your dashboard, disable the “Welcome Email” template and the “Email Verification” template by turning off the “Status” toggle. Make sure that “Change Password” is enabled. Go to Hooks and scroll down to “Post User Registration” and click “Create new hook” Use the following code to send a password reset email whenever a user is manually c…

Here is additional documentation on invitation-based flows: Send Email Invitations for Application Signup