Move file from users home folder to admin home folder

As I said already and if you haven't count home name namespace as root namespace, then sarshavs and Tomer participate in different teams. Anyways...

In all cases (as Greg agreed too) you can use copy by reference and remove the file from the source at the end. If we assume you can access sarshavs files with user id $sarshavsUID and access token $sarshavsToken, then following call would give you a file reference:

fref=`curl -X POST https://api.dropboxapi.com/2/files/copy_reference/get -H "Authorization: Bearer $sarshavsToken" -H "Dropbox-Api-Select-User: $sarshavsUID" -H 'Content-Type: application/json' -d '{"path":"/Path/To/Existing/file.ext"}' | jq -r .copy_reference`

 Now $fref holds the received reference. Next if we assume $tomerUID is id of Tomer and $tomerToken is corresponding token, following would paste the copied before file in Tomer owned space:

curl -X POST https://api.dropboxapi.com/2/files/copy_reference/save -H "Authorization: Bearer $tomerToken" -H "Dropbox-Api-Select-User: $tomerUID" -H 'Content-Type: application/json' -d "{\"copy_reference\":\"$fref\",\"path\":\"/Path/To/Paste/file.ext\"}"

 The above are HTTP shell calls. Of course, you can use whatever you're using till now following the same pattern. In such a way you're not limited to any folder or account. 😉

Hope this helps.