[
  {
    "model": "reference/2horse.fem",
    "frequency_Hz": 1.0,
    "depth_mm": 100,
    "circuits": {
      "A": [
        [
          1.0,
          0.0
        ],
        [
          0.24929386026007533,
          0.26450684217299864
        ],
        [
          0.042097571413460516,
          -0.039676350142851195
        ]
      ]
    }
  }
]