[
  {
    "op": "CALLDATALOAD",
    "value": "0x35",
    "description": "basic callDataLoad test",
    "environment": {
      "callData": "0x876543210000000000000000000000000000000000000000000000000000000000000001",
      "caller": "0x0000000000000000000000000000000000000000",
      "address": "0x0000000000000000000000000000000000000000",
      "coinbase": "0x0000000000000000000000000000000000000000"
    },
    "in": {
      "stack": [
        "0x0000000000000000000000000000000000000000000000000000000000000000"
      ]
    },
    "out": {
      "stack": [
        "0x8765432100000000000000000000000000000000000000000000000000000000"
      ]
    }
  }
]