diff --git a/waku/src/events/mod.rs b/waku/src/events/mod.rs
index 39ffdd2..535e3e3 100644
--- a/waku/src/events/mod.rs
+++ b/waku/src/events/mod.rs
@@ -6,7 +6,7 @@ use std::sync::RwLock;
 use once_cell::sync::Lazy;
 use serde::{Deserialize, Serialize};
 // internal
-use crate::general::{PubsubTopic, WakuMessage};
+use crate::general::{WakuMessage, WakuPubSubTopic};
 
 #[derive(Serialize, Deserialize)]
 pub struct Signal {
@@ -26,7 +26,7 @@ pub enum Event {
 #[serde(rename_all = "camelCase")]
 pub struct WakuMessageEvent {
     /// The pubsub topic on which the message was received
-    pubsub_topic: PubsubTopic,
+    pubsub_topic: WakuPubSubTopic,
     /// The message id
     message_id: String,
     /// The message in [`WakuMessage`] format
@@ -34,7 +34,7 @@ pub struct WakuMessageEvent {
 }
 
 impl WakuMessageEvent {
-    pub fn pubsub_topic(&self) -> &PubsubTopic {
+    pub fn pubsub_topic(&self) -> &WakuPubSubTopic {
         &self.pubsub_topic
     }
 
diff --git a/waku/src/general/mod.rs b/waku/src/general/mod.rs
index 5a52b18..102b6a7 100644
--- a/waku/src/general/mod.rs
+++ b/waku/src/general/mod.rs
@@ -2,12 +2,10 @@
 use std::fmt::{Display, Formatter};
 use std::str::FromStr;
 // crates
-use serde::{Deserialize, Serialize};
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use sscanf::{scanf, RegexRepresentation};
 // internal
 
-pub type PubsubTopic = String;
-pub type ContentTopic = String;
 pub type WakuMessageVersion = usize;
 /// Base58 encoded peer id
 pub type PeerId = String;
@@ -43,7 +41,7 @@ impl<T> From<JsonResponse<T>> for Result<T> {
 pub struct WakuMessage {
     payload: Box<[u8]>,
     /// The content topic to be set on the message
-    content_topic: ContentTopic,
+    content_topic: WakuContentTopic,
     /// The Waku Message version number
     version: WakuMessageVersion,
     /// Unix timestamp in nanoseconds
@@ -68,7 +66,7 @@ pub struct DecodedPayload {
 #[serde(rename_all = "camelCase")]
 pub struct ContentFilter {
     /// The content topic of a Waku message
-    content_topic: ContentTopic,
+    content_topic: WakuContentTopic,
 }
 
 /// The criteria to create subscription to a light node in JSON Format
@@ -79,7 +77,7 @@ pub struct FilterSubscription {
     /// Array of [`ContentFilter`] being subscribed to / unsubscribed from
     content_filters: Vec<ContentFilter>,
     /// Optional pubsub topic
-    pubsub_topic: Option<PubsubTopic>,
+    pubsub_topic: Option<WakuPubSubTopic>,
 }
 
 /// Criteria used to retrieve historical messages
@@ -87,7 +85,7 @@ pub struct FilterSubscription {
 #[serde(rename_all = "camelCase")]
 pub struct StoreQuery {
     /// The pubsub topic on which messages are published
-    pubsub_topic: Option<PubsubTopic>,
+    pubsub_topic: Option<WakuPubSubTopic>,
     /// Array of [`ContentFilter`] to query for historical messages
     content_filters: Vec<ContentFilter>,
     /// The inclusive lower bound on the timestamp of queried messages.
@@ -134,7 +132,7 @@ pub struct MessageIndex {
     /// UNIX timestamp in nanoseconds at which the message is generated by its sender
     sender_time: usize,
     /// The pubsub topic of the message at this [`MessageIndex`]
-    pubsub_topic: PubsubTopic,
+    pubsub_topic: WakuPubSubTopic,
 }
 
 pub enum Encoding {
@@ -212,6 +210,27 @@ impl Display for WakuContentTopic {
     }
 }
 
+impl Serialize for WakuContentTopic {
+    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        self.to_string().serialize(serializer)
+    }
+}
+
+impl<'de> Deserialize<'de> for WakuContentTopic {
+    fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let as_string: String = String::deserialize(deserializer)?;
+        as_string
+            .parse::<WakuContentTopic>()
+            .map_err(D::Error::custom)
+    }
+}
+
 pub struct WakuPubSubTopic {
     topic_name: String,
     encoding: Encoding,
@@ -242,3 +261,24 @@ impl Display for WakuPubSubTopic {
         write!(f, "/waku/2/{}/{}", self.topic_name, self.encoding)
     }
 }
+
+impl Serialize for WakuPubSubTopic {
+    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        self.to_string().serialize(serializer)
+    }
+}
+
+impl<'de> Deserialize<'de> for WakuPubSubTopic {
+    fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let as_string: String = String::deserialize(deserializer)?;
+        as_string
+            .parse::<WakuPubSubTopic>()
+            .map_err(D::Error::custom)
+    }
+}
diff --git a/waku/src/node/relay.rs b/waku/src/node/relay.rs
index e8d7c26..e6229b5 100644
--- a/waku/src/node/relay.rs
+++ b/waku/src/node/relay.rs
@@ -9,7 +9,7 @@ use crate::general::{
     Encoding, JsonResponse, MessageId, Result, WakuContentTopic, WakuMessage, WakuPubSubTopic,
 };
 
-/// Create a content topic string according to [RFC 23](https://rfc.vac.dev/spec/23/)
+/// Create a content topic according to [RFC 23](https://rfc.vac.dev/spec/23/)
 /// As per the [specification](https://rfc.vac.dev/spec/36/#extern-char-waku_content_topicchar-applicationname-unsigned-int-applicationversion-char-contenttopicname-char-encoding)
 pub fn waku_create_content_topic(
     application_name: &str,
@@ -39,7 +39,7 @@ pub fn waku_create_content_topic(
     .expect("Content topic data should be always parseable")
 }
 
-/// Create a pubsub topic string according to [RFC 23](https://rfc.vac.dev/spec/23/)
+/// Create a pubsub topic according to [RFC 23](https://rfc.vac.dev/spec/23/)
 /// As per the [specification](https://rfc.vac.dev/spec/36/#extern-char-waku_pubsub_topicchar-name-char-encoding)
 pub fn waku_create_pubsub_topic(topic_name: &str, enconding: Encoding) -> WakuPubSubTopic {
     unsafe {