How to sign an unsigned transaction
How to sign "03c4e5ae9c94d43b2b5a6e2c51bc198efb041cb4f4e1c43309ec7ef04346cc8b7a080000a5fbafdec82133c1afcba499d07ed164a6186701d08603a98d02c80100c0843d0000f579eef9cc330f79972459ccf9ac9d893b73e57e00" This unsigned transaction is signed. Use hsm or ledger