How to track deletions and additions of users in okta?

I have an OIDC application through which people log into our service. I have been asked to release control of the user on the octa side, not on our service. How can this be done most correctly and with the least amount of labor. As I understand, there is Event Types | Okta Developer, but it cannot track by specific application and filtering should be done on our side. Is there a solution to this problem or do we need to make an okta SAML application and connect SCIM?