post https://api.sandbox.overledger.io/api/preparations/transactions/smart-contracts/write
Generates a unique request ID and prepares a smart contract write payload for signing.
When creating a transaction in Overledger, the first step is to prepare it for signing. This endpoint allows you to call any function that changes/updates data on any contract deployed on Ethereum-based blockchains or the Hyperledger Fabric Sandbox.