minecraft-packets/minecraft-packets/data/bedrock/1.16.220/from-server/set_entity_motion/0.json

An easy way to query PrismarineJS/minecraft-packets

{
  "runtime_entity_id": "7",
  "velocity": {
    "x": -0.20861871540546417,
    "y": -0.07840000092983246,
    "z": -0.1259683221578598
  }
}