Object- The transaction call object
DATA, 20 Bytes - (optional) The address the transaction is sent from.
DATA, 20 Bytes - The address the transaction is directed to.
QUANTITY- (optional) Integer of the gas provided for the transaction execution. eth_call consumes zero gas, but this parameter may be needed by some executions.
QUANTITY- (optional) Integer of the gasPrice used for each paid gas
QUANTITY- (optional) Integer of the value sent with this transaction
DATA- (optional) Hash of the method signature and encoded parameters.
QUANTITY|TAG- integer block number, or the string
DATA- the return value of executed contract.