u.json

[
  {
    "elements": [
      {
        "MoveTo": {
          "x": 50.0,
          "y": 50.0
        }
      },
      {
        "LineTo": [
          {
            "x": 50.0,
            "y": 225.0
          },
          true
        ]
      },
      {
        "SplineTo": [
          null,
          null,
          {
            "x": 200.0,
            "y": 400.0
          },
          true
        ]
      },
      {
        "SplineTo": [
          null,
          null,
          {
            "x": 350.0,
            "y": 225.0
          },
          true
        ]
      },
      {
        "LineTo": [
          {
            "x": 350.0,
            "y": 50.0
          },
          true
        ]
      }
    ],
    "is_closed": false
  }
]