[
  {
    "blockNumber": 1,
    "blockHash": "0000000000000000000000000000000000000000000000000000000000000000",
    "previousBlockHash": "0000000000000000000000000000000000000000000000000000000000000000",
    "actions": [
      {
        "type": "add_todo",
        "payload": {
          "todoName": "Groceries",
          "id": 1
        }
      },
      {
        "type": "add_todo",
        "payload": {
          "todoName": "Places to Visit",
          "id": 2
        }
      }
    ]
  },
  {
    "blockNumber": 2,
    "blockHash": "0000000000000000000000000000000000000000000000000000000000000001",
    "previousBlockHash": "0000000000000000000000000000000000000000000000000000000000000000",
    "actions": [
      {
        "type": "add_tasks",
        "payload": {
          "todoId": 1,
          "tasks": [
            "apples",
            "bananas",
            "pears",
            "milk",
            "cookies"
          ]
        }
      },
      {
        "type": "add_tasks",
        "payload": {
          "todoId": 2,
          "tasks": [
            "Hong Kong",
            "Sydney",
            "London",
            "San Francisco"
          ]
        }
      }
    ]
  },
  {
    "blockNumber": 3,
    "blockHash": "0000000000000000000000000000000000000000000000000000000000000002",
    "previousBlockHash": "0000000000000000000000000000000000000000000000000000000000000001",
    "actions": [
      {
        "type": "update_task",
        "payload": {
          "todoId": 1,
          "taskName": "milk",
          "completed": true
        }
      },
      {
        "type": "update_task",
        "payload": {
          "todoId": 1,
          "taskName": "cookies",
          "completed": true
        }
      },
      {
        "type": "update_task",
        "payload": {
          "todoId": 2,
          "taskName": "Hong Kong",
          "completed": true
        }
      }
    ]
  }
]