I agree, there are actually two problems here:

One is technical, and to do with the service and how to deal with it.

One is political, and to do with who gets the blame when the service inevitably fails.

OP needs to work out if they're being tasked with the job as the answer to the technical problem or the political problem. Because management could be very aware that this is a ticking bomb with no technical solution, and have appointed OP as a scapegoat to take the blame when it blows up.