[
  {
    "line_index": 0,
    "parent_index": -1,
    "entity_index": 0,
    "entity_type": "Sample Line",
    "layer_name": "Default",
    "color": "White",
    "line_type": "Continuous",
    "thickness": 0.0,
    "visible": true,
    "start_x": 0.0,
    "start_y": 0.0,
    "start_z": 0.0,
    "end_x": 100.0,
    "end_y": 100.0,
    "end_z": 0.0,
    "length": 141.42,
    "angle_degrees": 45.0,
    "handle": "SampleHandle",
    "owner": "SampleOwner",
    "extended_data": "SampleData"
  }
]