The pinecard in this case needs to be just an url to plougshare:
e.g., https://ploughshare.web.cern.ch/ploughshare/db/pinejet/pinejet-atlas-wm-arxiv-1109.5141/pinejet-atlas-wm-arxiv-1109.5141.tgz
with a metadata.txt and possibly a postrun.sh if there is something that needs to be modified to make it compatible with our data (e.g., fb -> pb or whatever)