diff --git a/services/identity/src/database/device_list.rs b/services/identity/src/database/device_list.rs
--- a/services/identity/src/database/device_list.rs
+++ b/services/identity/src/database/device_list.rs
@@ -14,6 +14,7 @@
     DynamoDBError, TryFromAttribute,
   },
 };
+use serde::Serialize;
 use tracing::{debug, error, warn};
 
 use crate::{
@@ -36,16 +37,21 @@
 
 // We omit the content and notif one-time key count attributes from this struct
 // because they are internal helpers and are not provided by users
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
 pub struct DeviceRow {
+  #[serde(skip)]
   pub user_id: String,
+  #[serde(skip)]
   pub device_id: String,
+  #[serde(rename = "identityKeyInfo")]
   pub device_key_info: IdentityKeyInfo,
   pub content_prekey: Prekey,
   pub notif_prekey: Prekey,
   pub platform_details: PlatformDetails,
 
   /// Timestamp of last login (access token generation)
+  #[serde(skip)]
   pub login_time: DateTime<Utc>,
 }
 
@@ -61,26 +67,38 @@
   pub last_primary_signature: Option<String>,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
 pub struct IdentityKeyInfo {
   pub key_payload: String,
   pub key_payload_signature: String,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
 pub struct Prekey {
   pub prekey: String,
   pub prekey_signature: String,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
 pub struct PlatformDetails {
+  #[serde(serialize_with = "serialize_device_type")]
   device_type: DeviceType,
   code_version: u64,
   state_version: Option<u64>,
   major_desktop_version: Option<u64>,
 }
 
+fn serialize_device_type<S: serde::Serializer>(
+  device_type: &DeviceType,
+  s: S,
+) -> Result<S::Ok, S::Error> {
+  let v = device_type.as_str_name().to_lowercase();
+  v.serialize(s)
+}
+
 /// A struct representing device list update payload
 /// issued by the primary device.
 /// For the JSON payload, see [`crate::device_list::SignedDeviceList`]
diff --git a/services/identity/src/ddb_utils.rs b/services/identity/src/ddb_utils.rs
--- a/services/identity/src/ddb_utils.rs
+++ b/services/identity/src/ddb_utils.rs
@@ -9,6 +9,7 @@
   },
   database::{AttributeExtractor, AttributeMap},
 };
+use serde::Serialize;
 use std::collections::{HashMap, HashSet};
 use std::iter::IntoIterator;
 
@@ -160,13 +161,18 @@
   transactions
 }
 
+#[derive(Serialize)]
 pub struct DBIdentity {
   pub identifier: Identifier,
+  #[serde(rename = "farcasterID")]
   pub farcaster_id: Option<String>,
 }
 
+#[derive(Serialize)]
+#[serde(rename_all = "camelCase")]
 pub enum Identifier {
   Username(String),
+  #[serde(rename = "ethereumIdentity")]
   WalletAddress(EthereumIdentity),
 }
 
@@ -179,6 +185,8 @@
   }
 }
 
+#[derive(Serialize)]
+#[serde(rename_all = "camelCase")]
 pub struct EthereumIdentity {
   pub wallet_address: String,
   pub social_proof: SocialProof,
diff --git a/services/identity/src/grpc_utils.rs b/services/identity/src/grpc_utils.rs
--- a/services/identity/src/grpc_utils.rs
+++ b/services/identity/src/grpc_utils.rs
@@ -1,6 +1,6 @@
 use base64::{engine::general_purpose, Engine as _};
 use ed25519_dalek::{PublicKey, Signature, Verifier};
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 use tonic::Status;
 use tracing::warn;
 
@@ -84,9 +84,13 @@
   Ok(())
 }
 
+#[derive(Serialize)]
 pub struct DeviceKeysInfo {
+  #[serde(flatten)]
   pub device_info: DeviceRow,
+  #[serde(skip_serializing_if = "Option::is_none")]
   pub content_one_time_key: Option<String>,
+  #[serde(skip_serializing_if = "Option::is_none")]
   pub notif_one_time_key: Option<String>,
 }
 
diff --git a/services/identity/src/siwe.rs b/services/identity/src/siwe.rs
--- a/services/identity/src/siwe.rs
+++ b/services/identity/src/siwe.rs
@@ -6,6 +6,7 @@
   database::{AttributeExtractor, AttributeMap, TryFromAttribute},
 };
 use regex::Regex;
+use serde::Serialize;
 use siwe::Message;
 use tonic::Status;
 use tracing::error;
@@ -61,7 +62,7 @@
   ethereum_address_regex.is_match(candidate)
 }
 
-#[derive(derive_more::Constructor)]
+#[derive(derive_more::Constructor, Serialize)]
 pub struct SocialProof {
   pub message: String,
   pub signature: String,