Parameters
object - The transaction call object, the items in it as below

Item Name	Data Type	Description
from	DATA, 20 Bytes	address of the sender
to	DATA, 20 Bytes	address of the receiver
gas	QUANTITY	unused.
gasPrice	QUANTITY	unused.
value	QUANTITY	Integer of the value sent with this transaction
data	DATA	Hash of the method signature and encoded parameters.

Returns
The amount of energy used.

Example

curl -X POST '47.95.206.44:50545/jsonrpc' --data '{
	"jsonrpc": "2.0",
	"id": 1,
	"method": "eth_estimateGas",
	"params": [{
		"from": "0x41F0CC5A2A84CD0F68ED1667070934542D673ACBD8",
		"to": "0x4170082243784DCDF3042034E7B044D6D342A91360",
		"gas": "0x01",
		"gasPrice": "0x8c",
		"value": "0x01",
		"data": "0x70a08231000000000000000000000041f0cc5a2a84cd0f68ed1667070934542d673acbd8"
	}]
}'

Result

{"jsonrpc":"2.0","id":1,"result":"0x0"}