minecraft-packets/minecraft-packets/data/pc/1.8.8/from-server/named_sound_effect/1.json

An easy way to query PrismarineJS/minecraft-packets

{
  "soundName": "random.pop",
  "x": 780,
  "y": 512,
  "z": 1204,
  "volume": 0.20000000298023224,
  "pitch": 131
}