Payment to 3rd Party involved in the supply of data as part of the methodology

Sometimes, the raw data coming to guardian might be supplied via multiple parties. It'd be good to have it embedded in minting contract that payments could be made directly to that party.

No files, tests, or entry points are identified. Start by locating the minting contract and the existing payment flow, then determine how multiple raw-data suppliers should be represented and paid directly; done means the agreed payment behavior is implemented and verified.

Written by the indexing model from the issue text.