The payload, mutation.stageTransaction’s payload argument, means signed transaction. So you should make signed transaction. You can use libplanet and lib9c in C# language, or you can reference other post Transfer asset with GraphQL queries.
The payload, mutation.stageTransaction’s payload argument, means signed transaction. So you should make signed transaction. You can use libplanet and lib9c in C# language, or you can reference other post Transfer asset with GraphQL queries.