Failed to send MCASH using easytransferbyprivate RPC method

[szhelonkin]

Failed to send MCASH using easytransferbyprivate RPC method.
{"result"=>{"code"=>"CONTRACT_VALIDATE_ERROR", "message"=>"313a39363a20494e56414c49442068657820537472696e67"}}

[nghiand]

I've successfully sent MCASH using this api.
Did your request use address in base58? Please try to_address and memo (optional) in hex format.

[szhelonkin]

Yes address in base58 for example MHcBgQK9QsctfoWsWQ5NWRiEwvcysvUQMv.
It works fine before 12-2019 after that we always have validate error.

[nghiand]

The Api does not accept address in base58, so please use hex format instead.
326a7b6522282f37d09d77527f28508407b88c583d for your example MHcBgQK9QsctfoWsWQ5NWRiEwvcysvUQMv

[szhelonkin]

Yes it works fine.
It it possible to get hex fromat from base58 using api?