Configure SSO to land on My Activity Center (Deeplink)

Summary:

It seems like SSO should allow us to use a deeplink that redirects the user to a specific page. However, I am unfamiliar with SSO configuration and need help with understanding where the required changes should be made. I'm able to get the link to work by directly logging in. I've tried hacking our SSO url without any luck.

Content (please ensure you mask any confidential information):

Working Deeplink: https://xxxx.fa.us2.oraclecloud.com/fscmUI/faces/deeplink?objType=FUSE_PER_INFO&action=NONE
Hacked SSO (doesn't work): https://sts.xxxxxxxxxxxx.com/adfs/ls/Idpinitiatedsignon.aspx?loginToRp=https://xxxx.fa.us2.oraclecloud.com/fscmUI/faces/deeplink?objType=FUSE_PER_INFO&action=NONE