FinLeaseApproval routing based on BU or update user name

Summary: Need to route approval for lease based on either last update user or business unit lease was created for. Can't find easy option to achieve neither.

Content (required): Current review of FinLeaseApproval shows only 3 available payload attributes: responsibleUserName, leaseDetailId, and leaseNumber

responsibleUserName is based on lease creation user.

What options do we have to expand available approval atttributes to either access Lease BU or change resposnsibleUserName to be sourced by last update user name?

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