| Name | Type | Description | Notes |
|---|---|---|---|
| amount | string | Represents transactions' amount. | |
| contract | string | Defines the specific token identifier. For Ethereum-based transactions it is the contract. | |
| contract_type | string | Represents the ERC contract type. It can be ERC20 or ERC721 | |
| recipient | string | The address which receives this transaction. In UTXO-based protocols like Bitcoin there could be several senders while in account-based protocols like Ethereum there is always only one recipient. | |
| sender | string | Represents the address which sends this transaction. In UTXO-based protocols like Bitcoin there could be several senders while in account-based protocols like Ethereum there is always only one sender. |