contract: The address of the token contract.owner: The address of the token owner.spender: The address of the token spender.address: The address for which token balances will be checked.contractAddresses: An array of contract addresses.address: The address for which token balances were checked.tokenBalances: An array of token balance objects. Each object contains:contractAddress: The address of the contract.tokenBalance: The balance of the contract, as a string representing a base-10 number.error: An error string. One of this or tokenBalance will be null.address: The address of the token contract.name: The token's name. null if not defined in the contract and not available from other sources.symbol: The token's symbol. null if not defined in the contract and not available from other sources.decimals: The token's decimals. null if not defined in the contract and not available from other sources.logo: URL of the token's logo image. null if not available.web3.eth.subscribe("pendingTransactions"), but differs in that it emits full transaction information rather than just transaction hashes."alchemy_fullPendingTransactions", which is different from the string used in raw eth_subscribe JSON-RPC calls, where it is "alchemy_newFullPendingTransactions" instead. This is confusing, but it is also consistent with the existing Web3 subscription APIs (for example: web3.eth.subscribe("pendingTransactions") vs "newPendingTransactions" in raw JSON-RPC).fromBlock: in hex string or "latest". optional (default to latest)toBlock: in hex string or "latest". optional (default to latest)fromAddress: in hex string. optionaltoAddress: in hex string. optional.contractAddresses: list of hex strings. optional.category: list of any combination of external, token. optional, if blank, would include both.excludeZeroValue: aBoolean . optional (default true)maxCount: max number of results to return per call. optional (default 1000)fromBlock and toBlock are inclusive. Both default to latest if not specified.fromAddress and toAddress will be ANDed together when filtering. If left blank, will indicate a wildcard (any address).contractAddresses only applies to token category transfers (eth log events). The list of addresses are ORed together. This filter will be ANDed with fromAddress and toAddress for eth log events. If empty, or unspecified, it will be taken as a wildcard (any contract addresses).category: external for primary level eth transfers, token for contract event transfers.excludeZeroValue: an optional Boolean to exclude asset transfers with a value field of zero (defaults to true)maxCount: The maximum number of results to return per call. Default and max will be 1000.pageKey: If left blank, will return the first 1000 or maxCount number of results. If more results are available, a uuid pageKey will be returned in the response. Pass that uuid into pageKey to fetch the next 1000 or maxCount. See section on pagination. web3.eth.getFeeHistory(blockRange, startingBlock, percentiles[])blockRange: The number of blocks for which to fetch historical fees. Can be an integer or a hex string.startingBlock: The block to start the search. The result will look backwards from here. Can be a hex string or a predefined block string e.g. "latest".percentiles: (Optional) An array of numbers that define which percentiles of reward values you want to see for each block.oldestBlock: The oldest block in the range that the fee history is being returned for.baseFeePerGas: An array of base fees for each block in the range that was looked up. These are the same values that would be returned on a block for the eth_getBlockByNumber method.gasUsedRatio: An array of the ratio of gas used to gas limit for each block.reward: Only returned if a percentiles paramater was provided. Each block will have an array corresponding to the percentiles provided. Each element of the nested array will have the tip provided to miners for the percentile given. So if you provide [50, 90] as the percentiles then each block will have a 50th percentile reward and a 90th percentile reward.web3.eth.getMaxPriorityFeePerGas()maxPriorityFeePerGas in EIP 1559 transactions. Rather than using feeHistory and making a calculation yourself you can just use this method to get a quick estimate. Note: this is a geth-only method, but Alchemy handles that for you behind the scenes.maxPriorityFeePerGas suggestion. You can plug this directly into your transaction field.