Parse all data from strings to actual objects before using wharfkit

[Viterbo]

Overview

OBE handles data in string format to create and sign transactions. However, now that we are using the wharfkit library, we need to parse all non-string data to the type the library expects in order for it to work correctly, since it is a strongly typed library.

Note: There is already a branch that addresses one of the cases for signing an action in a specific case, but it is probably not the only case. So the work should start from that point in order not to duplicate efforts.

Acceptance Criteria

All attempts to sign transactions from OBE must use the types expected by the library so that they do not fail at runtime.

Tasks

• Find and list all cases where wharfkit is used to sign transactions.
• Check which formats are expected for each data in each case.
• Parse the data used to match the types expected by the library.