aliasCopy Pagepost https://track.attributionapp.com/v1/aMerge users historical events and identities.Body ParamstypestringrequiredDefaults to aliasType of event, must be always set to alias.userIdstringrequiredDefaults to NEW_USER_5678Your new user ID.previousIdstringrequiredDefaults to OLD_USER_1234Your old userId or anonymousId that you want to alias to new userId above.Responses 200200 400400Updated 7 months ago