username:passwordAuthorization: Basic *****************curl --location --request POST '/Transactions/SignTransactionsWithSignatureCode/245689' \
--header 'Authorization: Basic <encoded-value>' \
--header 'Content-Type: application/json' \
--data-raw '[
"3fa85f64-5717-4562-b3fc-2c963f66afa6",
"87bd944e-219b-4ce6-b1b6-06608e12480b"
]'{}