Contract renewal management software could not be built integrated with SharePoint Online.
In the SharePoint Online, there are no OOTB features like E-signature and comprehensive dashboard.
For E-signature, you could use code to achieve this.
Reference:
https://www.paitgroup.com/blog/easy-digital-signatures-in-sharepoint
For dashboard, you could design the dashboard in excel then show in the SharePoint page.
Reference:
https://medium.com/jumpto365/simple-but-effective-dashboards-in-sharepoint-cae9003b9dbb
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