#[no_mangle]
pub unsafe extern "C" fn rust_create_tx(
    wallet: *const c_char,
    amount: *const c_char,
    to_address: *const c_char,
    secret_key_index: *const c_char,
    epicbox_config: *const c_char,
    min_confirmations: *const c_char
) -> *const c_char