---
title: Objects
sort_key: D
---

The following are data structures which are used for various RPC methods.

### Transaction call object

The *transaction call object* contains all the necessary parameters for executing an EVM contract method.

| Field      | Type       | Bytes | Optional | Description |
|:-----------|:-----------|:------|:---------|:------------|
| `from`     | `Address`  | 20    | Yes      | Address the transaction is simulated to have been sent from. Defaults to first account in the local keystore or the `0x00..0` address if no local accounts are available. |
| `to`       | `Address`  | 20    | No       | Address the transaction is sent to. |
| `gas`      | `Quantity` | <8    | Yes      | Maximum gas allowance for the code execution to avoid infinite loops. Defaults to `2^63` or whatever value the node operator specified via `--rpc.gascap`. |
| `gasPrice` | `Quantity` | <32   | Yes      | Number of `wei` to simulate paying for each unit of gas during execution. Defaults to `1 gwei`. |
| `maxFeePerGas` | `Quantity` | <32   | Yes      | Maximum fee per gas the transaction should pay in total. Relevant for type-2 transactions. |
| `maxPriorityFeePerGas` | `Quantity` | <32   | Yes      | Maximum tip per gas that's given directly to the miner. Relevant for type-2 transactions. |
| `value`    | `Quantity` | <32   | Yes      | Amount of `wei` to simulate sending along with the transaction. Defaults to `0`. |
| `nonce`     | `Quantity`   | <8   | Yes      | Nonce of sender account. |
| `input`     | `Binary`   | any   | Yes      | Binary data to send to the target contract. Generally the 4 byte hash of the method signature followed by the ABI encoded parameters. For details please see the [Ethereum Contract ABI](https://docs.soliditylang.org/en/v0.7.0/abi-spec.html). This field was previously called `data`. |
| `accessList`     | `AccessList`   | any   | Yes      | A list of addresses and storage keys that the transaction plans to access. Used in non-legacy, i.e. type 1 and 2 transactions. |
| `chainId`     | `Quantity`   | <32   | Yes      | Transaction only valid on networks with this chain ID. Used in non-legacy, i.e. type 1 and 2 transactions. |

Example for a legacy transaction:

```json
{
  "from": "0xd9c9cd5f6779558b6e0ed4e6acf6b1947e7fa1f3",
  "to":   "0xebe8efa441b9302a0d7eaecc277c09d20d684540",
  "gas":  "0x1bd7c",
  "data": "0xd459fc46000000000000000000000000000000000000000000000000000000000046c650dbb5e8cb2bac4d2ed0b1e6475d37361157738801c494ca482f96527eb48f9eec488c2eba92d31baeccfb6968fad5c21a3df93181b43b4cf253b4d572b64172ef000000000000000000000000000000000000000000000000000000000000008c00000000000000000000000000000000000000000000000000000000000000e0000000000000000000000000000000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000001a00000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000001c000000000000000000000000000000000000000000000000000000000000001c0000000000000000000000000000000000000000000000000000000000000002b85c0c828d7a98633b4e1b65eac0c017502da909420aeade9a280675013df36bdc71cffdf420cef3d24ba4b3f9b980bfbb26bd5e2dcf7795b3519a3fd22ffbb2000000000000000000000000000000000000000000000000000000000000000238fb6606dc2b5e42d00c653372c153da8560de77bd9afaba94b4ab6e4aa11d565d858c761320dbf23a94018d843772349bd9d92301b0ca9ca983a22d86a70628",
}
```

Example for a type-1 transaction:

```json
{
  "from": "0xd9c9cd5f6779558b6e0ed4e6acf6b1947e7fa1f3",
  "to":   "0xebe8efa441b9302a0d7eaecc277c09d20d684540",
  "gas":  "0x1bd7c",
  "data": "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",
  "chainId": "0x1",
  "accessList":  [
    {
      "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
      "storageKeys": ["0xda650992a54ccb05f924b3a73ba785211ba39a8912b6d270312f8e2c223fb9b1", "0x10d6a54a4754c8869d6886b5f5d7fbfa5b4
                  522237ea5c60d11bc4e7a1ff9390b"]
    }, {
      "address": "0xa2327a938febf5fec13bacfb16ae10ecbc4cbdcf",
      "storageKeys": []
    },
  ]
}
```

Example for a type-2 transaction:

```json
{
  "from": "0xd9c9cd5f6779558b6e0ed4e6acf6b1947e7fa1f3",
  "to":   "0xebe8efa441b9302a0d7eaecc277c09d20d684540",
  "gas":  "0x1bd7c",
  "maxFeePerGas": "0x6b44b0285",
  "maxPriorityFeePerGas": "0x6b44b0285",
  "data": "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",
  "chainId": "0x1",
  "accessList":  []
}
```