{
  "request": "{block (hash : \"0x123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0\") {number } }",
  "responses": [{
    "errors": [
      {
        "message": "Exception while fetching data (/block) : Block hash 0x123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0 was not found",
        "locations": [
          {
            "line": 1,
            "column": 2
          }
        ],
        "path": [
          "block"
        ],
        "extensions": {
          "classification": "DataFetchingException"
        }
      }
    ],
    "data": null
  }],
  "statusCode": 400
}