Webhooks and Particle Public events

Good day to my fellow particle enthusiasts!
I am working on a project and I came across a difficulty im not sure how to solve.
I have a device (not mine) publishing a Public event every minute. I want to create a microservice (via hook.io) that will be using the published data. So far i use webhook integration kindly provided by Particle.io, but that works only for events published by my devices.
How do i make an integration that “listens” to public events published by some other device?
Thank you for your help in advance.