[
  [
    {
      "namespace": "signal",
      "name": "brush_x",
      "scope": [0],
      "value": [0, 50]
    }
  ],
  [
    {
      "namespace": "signal",
      "name": "brush_x",
      "scope": [0],
      "value": [50, 150]
    }
  ],
  [
    {
      "namespace": "signal",
      "name": "brush_x",
      "scope": [0],
      "value": [70, 120]
    },
    {
      "namespace": "signal",
      "name": "brush_x",
      "scope": [1],
      "value": [40, 80]
    }
  ],
  [
    {
      "namespace": "signal",
      "name": "brush_x",
      "scope": [0],
      "value": [0, 0]
    }
  ],
  [
    {
      "namespace": "signal",
      "name": "brush_x",
      "scope": [1],
      "value": [0, 0]
    }
  ]
]