snowball

{
  "format_version": "1.16.0",
  "minecraft:entity": {
    "description": {
      "identifier": "minecraft:snowball",
      "is_spawnable": false,
      "is_summonable": true,
      "is_experimental": false
    },
    "components": {
      "minecraft:collision_box": {
        "width": 0.25,
        "height": 0.25
      },
      "minecraft:projectile": {
        "on_hit": {
          "impact_damage": {
            "filter": "blaze",
            "damage": 3,
            "knockback": true
          },
          "remove_on_hit": { },
          "particle_on_hit": {
            "particle_type": "snowballpoof",
            "num_particles": 6,
            "on_entity_hit": true,
            "on_other_hit": true
          }
        },
        "anchor": 1,
        "power": 1.5,
        "gravity": 0.03,
        "angle_offset": 0.0,
        "offset": [ 0, -0.1, 0 ]
      },
        "minecraft:physics": {
      },
      "minecraft:pushable": {
        "is_pushable": true,
        "is_pushable_by_piston": true
      },
      "minecraft:conditional_bandwidth_optimization": {
        "default_values": {
          "max_optimized_distance": 100.0,
          "max_dropped_ticks": 7,
          "use_motion_prediction_hints": true
        }
      }
    }
  }
}