fulfillment_data fetch is failing for collection offers #1365
Description
I'm searching for arbitrage between listings and bids on opensea. When finding one between a listing and a collection offer (no criteria- for all NFTs in the collection and with the opensea signed zone), I'm trying to fetch the fulfillment_data for both. I'm able to get it for the listing, but it fails for the collection offer. I'm only able to get it, if I pass the address from the listing (the NFT owner) as the fulfillerAddress- but then I'm not able to fulfill due to invalid signature. How can I fetch the fulfillment_data, and use it to fulfill the arbitrage, in this case?