this.state = {
  scene: fromJS([
    {
      conditions: [
        "any",
        [
          ["custom-event", "MY_EVENT", 1],
          ["custom-event", "MY_EVENT", 2],
          ["any", [["custom-event", "MY-EVENT", 3]]]
        ]
      ],
      actions: [["custom-action", 1], ["custom-action", 2]]
    },
    {
      conditions: [
        "any",
        [
          ["custom-event", "MY_EVENT", 4],
          ["custom-event", "MY_EVENT", 5],
          ["any", [["custom-event", "MY-EVENT", 6]]]
        ]
      ],
      actions: [["custom-action", 3], ["custom-action", 4], ["custom-action", 5]]
    }
  ])
};

onChange(from: any, to: any) {
  const stateImmutable = this.state.scene;
  const source = from;
  const target = to;
  const sourceItem = stateImmutable.getIn(source);
  let changeTargetPos = target[target.length - 1];
  if (source.length > target.length) {
    changeTargetPos = target.length - 1;
  } else if (source.length < target.length) {
    changeTargetPos = source.length - 1;
  }

  let newTarget = target;

  if (target[changeTargetPos] > source[changeTargetPos]) {
    newTarget[changeTargetPos] = newTarget[changeTargetPos] - 1;
  }

  const newState = stateImmutable.removeIn(source);

  const n = newState.updateIn(newTarget.slice(0, -1), (list: any) => {
    return list.insert(newTarget[newTarget.length - 1], sourceItem);
  });

  this.setState({ scene: n });
}

from: [1, "conditions", 1, 1, 1, 0] to: [1, "conditions", 1, 1, 1, 1]