Hi.
Sorry to revive this old thread but this is exactly what I would like to do too but fear I have less skills to understand so quickly what the solution was.
I've got as far as creating a new feed with the json address in pfblockerng but how do I now use that as an alias? When attempting to create a new alias I'm not sure how to use that feed information or refer to it, the only option I have is the usual host,network,ip, url etc.
I am not a gun on this stuff so please be patient with me :)
Cheers