polkadot-js/api

{
  "jsonrpc": "2.0",
  "method": "state_storage",
  "params": {
    "result": {
      "block": "0x49e40de6af6524a6bbe1654cd261907073f0d76fc0e73ded942f1fd867096fa8",
      "changes": [
        [
          "0xcc956bdb7605e3547539f321ac2bc95c",
          "0x08000000000000000000010000000000000000000000000000"
        ]
      ]
    },
    "subscription": 119
  }
}