---
title: Objects
description: Data structures used for RPC methods
---
The following are data structures which are used for various RPC methods.
## Transaction call object {#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": "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"
}
```
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": []
}
```
