[
  {
    "payload":"<svg/onload=alert(1)>",
    "callback":"P1",
    "descript":"blahblah~"
  },
  {
    "payload":"<svg/onload=alert(1)>",
    "callback":"P2",
    "descript":"blahblah~"
  },
  {
    "payload":"<>",
    "callback":"P1",
    "descript":"blahblah~"
  }
]