This parameter is required to create valid embed requests.
Syntax
Properties
The URL-encoded path to the starting page. Click the following toggles to view examples for each of the pages you can use as a starting page.
/dashboards/<dashboard-id>
Starts at a specified dashboard
/dashboards/<dashboard-id>
Starts at a specified dashboard
/dashboards/<dashboard-id>
/w/<dashboard-id>/duplicate
Starts at a workbook
/w/<dashboard-id>/duplicate
Starts at a workbook
/w/<dashboard-id>/duplicate
/chat
Starts at AI chat
/chat
Starts at AI chat
In this example, a 
connectionRoles parameter was also provided to associate the chat with a specific connection (MD2) and its models:/my
Starts at the user's My Documents folder
/my
Starts at the user's My Documents folder
/my
/entity-folder
Starts at the folder associated with the user's entity
/entity-folder
Starts at the folder associated with the user's entity
An 
entity parameter is required when /entity-folder is used as the contentPath.By default, the entity value will be used to create the entity folder. To provide a different name for the folder, use the entityFolderLabel parameter./root
Starts at the Hub
/root
Starts at the Hub
Examples
Dashboard path
Workbook path
My Documents path