in src/signing.c [117:125]
void aws_crt_signing_config_aws_set_signed_body_value(
aws_crt_signing_config_aws *signing_config,
const uint8_t *signed_body,
size_t signed_body_length) {
aws_byte_buf_clean_up(&signing_config->signed_body_value);
struct aws_byte_buf input = aws_byte_buf_from_array(signed_body, signed_body_length);
aws_byte_buf_init_copy(&signing_config->signed_body_value, aws_crt_default_allocator(), &input);
signing_config->config.signed_body_value = aws_byte_cursor_from_buf(&signing_config->signed_body_value);
}