Are you looking to share an individual page to another account?
You can do this by setting up the page as its own site design, then sharing your single page site design with the other account.
Step 1: Add a Blank Site Design
First, add a blank site design to your library
Here is the blank template Share Key: jWAPPvAagQ6x38940 (install steps)
Step 2: Add Your Page to the Design
Once you have added a blank site design, you can add the desired page to the new site design.
Step 3: Generate a Share Key
Last, generate a share key to share to another account!