diff --git a/crates/threshold-signature-server/Cargo.toml b/crates/threshold-signature-server/Cargo.toml
index c04cce9f9..104d844f5 100644
--- a/crates/threshold-signature-server/Cargo.toml
+++ b/crates/threshold-signature-server/Cargo.toml
@@ -84,6 +84,7 @@ ethers-core ="2.0.14"
 schnorrkel  ={ version="0.11.4", default-features=false, features=["std"] }
 schemars    ={ version="0.8.21" }
 subxt-signer="0.35.3"
+tdx-quote   ={ git="https://github.com/entropyxyz/tdx-quote", features=["mock"] }
 
 # Note: We don't specify versions here because otherwise we run into a cyclical dependency between
 # `entropy-tss` and `entropy-testing-utils` when we try and publish the `entropy-tss` crate.
diff --git a/crates/threshold-signature-server/src/validator/api.rs b/crates/threshold-signature-server/src/validator/api.rs
index 2c022eb95..7a1b78d74 100644
--- a/crates/threshold-signature-server/src/validator/api.rs
+++ b/crates/threshold-signature-server/src/validator/api.rs
@@ -374,7 +374,7 @@ pub async fn attest(
 pub async fn attest(
     State(app_state): State<AppState>,
     input: Bytes,
-) -> Result<(StatusCode, String), ValidatorErr> {
+) -> Result<(StatusCode, Bytes), ValidatorErr> {
     let nonce = input[..].try_into()?;
 
     let rpc = get_rpc(&app_state.configuration.endpoint).await?;
@@ -401,5 +401,5 @@ pub async fn attest(
     let quote = tdx_quote::Quote::mock(signing_key.clone(), input_data.0);
     // Here we would submit an attest extrinsic to the chain - but for now we just include it in the
     // response
-    Ok((StatusCode::OK, format!("{:?}", quote)))
+    Ok((StatusCode::OK, Bytes::from(quote.as_bytes().to_vec())))
 }
diff --git a/crates/threshold-signature-server/src/validator/tests.rs b/crates/threshold-signature-server/src/validator/tests.rs
index e74556cff..a3dfd3d1c 100644
--- a/crates/threshold-signature-server/src/validator/tests.rs
+++ b/crates/threshold-signature-server/src/validator/tests.rs
@@ -262,11 +262,18 @@ async fn test_attest() {
     initialize_test_logger().await;
     clean_tests();
 
-    // let cxt = test_node_process_testing_state(false).await;
+    let _cxt = test_node_process_testing_state(false).await;
     let (_validator_ips, _validator_ids) = spawn_testing_validators(false).await;
 
     let client = reqwest::Client::new();
-    let res =
-        client.post(format!("http://127.0.0.1:3001/attest")).body(Vec::new()).send().await.unwrap();
-    println!("{:?}", res.text().await);
+    let res = client
+        .post(format!("http://127.0.0.1:3001/attest"))
+        .body([0; 32].to_vec())
+        .send()
+        .await
+        .unwrap();
+    assert_eq!(res.status(), 200);
+    let quote = res.bytes().await.unwrap();
+    // This verifies the signature in the quote
+    tdx_quote::Quote::from_bytes(&quote).unwrap();
 }