minecraft-packets/minecraft-packets/data/pc/1.8.8/from-server/update_attributes/4.json

An easy way to query PrismarineJS/minecraft-packets

{
  "entityId": 117,
  "properties": [
    {
      "key": "generic.movementSpeed",
      "value": 0.20000000298023224,
      "modifiers": []
    },
    {
      "key": "generic.maxHealth",
      "value": 10,
      "modifiers": []
    }
  ]
}