sending transaction fee from a fixed address, when using sendassetfrom

Question

We have a chain with transaction fees to send assets - and we use that to manage assets on behalf of users, by linking addresses with account emails in our database. We use sendassetwithmetadatafrom, but at the moment each account address needs to have native currency for us to do that...is there anyway around that?..for example, inlcuding the transaction fee from a central admin address?..

Answer 1

You could use the raw transaction APIs to build up something which spends the assets from one address, and spends native currency from another address to cover the fee. This transaction would then need to be signed by both parties to become valid.