diff --git a/mobile_config/tests/entity_service.rs b/mobile_config/tests/entity_service.rs
new file mode 100644
index 000000000..b447ae8c1
--- /dev/null
+++ b/mobile_config/tests/entity_service.rs
@@ -0,0 +1,81 @@
+use std::vec;
+
+use helium_crypto::{PublicKey, Sign};
+use helium_proto::services::mobile_config::{self as proto, EntityClient, EntityVerifyReqV1};
+use mobile_config::{
+    entity_service::EntityService,
+    key_cache::{CacheKeys, KeyCache},
+    KeyRole,
+};
+use prost::Message;
+use sqlx::PgPool;
+use tokio::net::TcpListener;
+use tonic::transport;
+
+pub mod common;
+use common::*;
+
+async fn spawn_entity_service(
+    pool: PgPool,
+    admin_pub_key: PublicKey,
+) -> (
+    String,
+    tokio::task::JoinHandle<std::result::Result<(), helium_proto::services::Error>>,
+) {
+    let server_key = make_keypair();
+    let listener = TcpListener::bind("127.0.0.1:0").await.unwrap();
+    let addr = listener.local_addr().unwrap();
+
+    // Start the entity server
+    let keys = CacheKeys::from_iter([(admin_pub_key.to_owned(), KeyRole::Administrator)]);
+    let (_key_cache_tx, key_cache) = KeyCache::new(keys);
+    let gws = EntityService::new(key_cache, pool.clone(), server_key);
+    let handle = tokio::spawn(
+        transport::Server::builder()
+            .add_service(proto::EntityServer::new(gws))
+            .serve_with_incoming(tokio_stream::wrappers::TcpListenerStream::new(listener)),
+    );
+
+    (format!("http://{addr}"), handle)
+}
+
+#[sqlx::test(fixtures("key_to_assets_es.sql"))]
+async fn entity_service_verify(pool: PgPool) {
+    let admin_key = make_keypair();
+    let (addr, _handle) = spawn_entity_service(pool.clone(), admin_key.public_key().clone()).await;
+    let mut client = EntityClient::connect(addr).await.unwrap();
+    // Case 1: utf8 serialization
+    let mut req = EntityVerifyReqV1 {
+        entity_id: "Helium Mobile Mapping Rewards".to_string().into_bytes(),
+        signer: admin_key.public_key().clone().into(),
+        signature: vec![],
+    };
+    req.signature = admin_key.sign(&req.encode_to_vec()).unwrap();
+
+    // Should not fail (return Ok message)
+    client.verify(req).await.unwrap();
+
+    // Case 2: b58 serialization
+    let entity_bytes = bs58::decode("112d6JcLCyi5cs5BCXhK22VAgEAQNRvKkP9KW5XHeRAQpHoHhFyF")
+        .into_vec()
+        .unwrap();
+
+    let mut req = EntityVerifyReqV1 {
+        entity_id: entity_bytes,
+        signer: admin_key.public_key().clone().into(),
+        signature: vec![],
+    };
+    req.signature = admin_key.sign(&req.encode_to_vec()).unwrap();
+    // Should not fail (return Ok message)
+    client.verify(req).await.unwrap();
+
+    // Case 3: entity doesn't exist
+    let mut req = EntityVerifyReqV1 {
+        entity_id: "nonexistent".to_string().into_bytes(),
+        signer: admin_key.public_key().clone().into(),
+        signature: vec![],
+    };
+    req.signature = admin_key.sign(&req.encode_to_vec()).unwrap();
+    // Should return error
+    client.verify(req).await.unwrap_err();
+}
diff --git a/mobile_config/tests/fixtures/key_to_assets_es.sql b/mobile_config/tests/fixtures/key_to_assets_es.sql
new file mode 100644
index 000000000..031f32afa
--- /dev/null
+++ b/mobile_config/tests/fixtures/key_to_assets_es.sql
@@ -0,0 +1,16 @@
+CREATE TABLE public.key_to_assets (
+    address character varying(255) NOT NULL,
+    dao character varying(255),
+    asset character varying(255),
+    entity_key bytea,
+    bump_seed integer,
+    refreshed_at timestamp with time zone,
+    created_at timestamp with time zone NOT NULL,
+    key_serialization jsonb
+);
+
+INSERT INTO "key_to_assets" ("address", "dao", "asset", "entity_key", "bump_seed", "refreshed_at", "created_at", "key_serialization") VALUES
+('4TCw73EqhtXbDp19D4WY72vWZo9QWY6gcphRFswzKBNk',	'BQ3MCuTT5zVBhNfQ4SjMh3NPVhFy73MPV8rjfq5d1zie',	'HJtATvtga22LQPViQGoSdwqoHMS8uxirNNsRyGpQK1Nc',	'Helium Mobile Mapping Rewards',	254,	'2025-06-12 02:24:01.305+00',	'2025-06-12 02:24:01.305+00',	'"utf8"');
+
+INSERT INTO "key_to_assets" ("address", "dao", "asset", "entity_key", "bump_seed", "refreshed_at", "created_at", "key_serialization") VALUES
+('4RsbdRtGNiMEUPPJrmkVpSUswYXLKtZLUKaiyaGFxyd5',	'BQ3MCuTT5zVBhNfQ4SjMh3NPVhFy73MPV8rjfq5d1zie',	'4xpWF7KjbcShMt3LnEJmPkbDVyEZ19zrwtJwS1e1e827',	decode('0000d5a568ab7b418ba68eabe61b5b042f84afcfa86f1cdfcdba644401b6bcb65c84af622936', 'hex'),	253,	'2025-04-30 16:49:26.499+00',	'2023-05-04 14:36:16.429+00',	'"b58"');