{
  "format_version": "1.10.0",
  "particle_effect": {
    "description": {
      "identifier": "minecraft:creaking_heart_trail",
      "basic_render_parameters": {
        "material": "particles_alpha",
        "texture": "textures/particle/pixel"
      }
    },
    "components": {
      "minecraft:emitter_rate_instant": {
        "num_particles": 1
      },
      "minecraft:emitter_lifetime_once": {
      },
      "minecraft:emitter_shape_point": {
        "direction": [
          "variable.direction.x",
          "variable.direction.y",
          "variable.direction.z"
        ]
      },
      "minecraft:particle_initial_speed": "variable.particle_initial_speed",
      "minecraft:particle_lifetime_expression": {
        "max_lifetime": "variable.max_lifetime"
      },
      "minecraft:particle_motion_dynamic": {
        "linear_acceleration": [ 0, 0, 0 ]
      },
      "minecraft:particle_appearance_billboard": {
        "size": [ 0.0375, 0.0375 ],
        "facing_camera_mode": "lookat_xyz"
      },
      "minecraft:particle_appearance_tinting": {
        "color": [
          "variable.color.r",
          "variable.color.g",
          "variable.color.b",
          1.0
        ]
      }
    }
  }
}