diff --git a/src/activitypub/actor.rs b/src/activitypub/actor.rs
index 1fa786f..7829ece 100644
--- a/src/activitypub/actor.rs
+++ b/src/activitypub/actor.rs
@@ -2,7 +2,7 @@ use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
 
 use crate::config::Config;
-use crate::errors::HttpError;
+use crate::models::profiles::types::ExtraField;
 use crate::models::users::types::User;
 use crate::utils::crypto::{deserialize_private_key, get_public_key_pem};
 use crate::utils::files::get_file_url;
@@ -14,7 +14,7 @@ use super::views::{
     get_followers_url,
     get_following_url,
 };
-use super::vocabulary::{PERSON, IMAGE};
+use super::vocabulary::{PERSON, IMAGE, PROPERTY_VALUE};
 
 const W3ID_CONTEXT: &str = "https://w3id.org/security/v1";
 
@@ -40,6 +40,14 @@ pub struct ActorCapabilities {
     accepts_chat_messages: Option<bool>,
 }
 
+#[derive(Deserialize, Serialize)]
+pub struct ActorProperty {
+    name: String,
+    #[serde(rename = "type")]
+    object_type: String,
+    value: String,
+}
+
 #[derive(Deserialize, Serialize)]
 #[serde(rename_all = "camelCase")]
 pub struct Actor {
@@ -71,12 +79,31 @@ pub struct Actor {
 
     #[serde(skip_serializing_if = "Option::is_none")]
     pub summary: Option<String>,
+
+    pub attachment: Option<Vec<ActorProperty>>,
+}
+
+impl Actor {
+    /// Parse 'attachment' into ExtraField vector
+    pub fn extra_fields(&self) -> Vec<ExtraField> {
+        match &self.attachment {
+            Some(properties) => {
+                properties.iter()
+                    .map(|prop| ExtraField {
+                        name: prop.name.clone(),
+                        value: prop.value.clone(),
+                    })
+                    .collect()
+            },
+            None => vec![],
+        }
+    }
 }
 
 pub fn get_actor_object(
     config: &Config,
     user: &User,
-) -> Result<Actor, HttpError> {
+) -> Result<Actor, rsa::pkcs8::Error> {
     let username = &user.profile.username;
     let id = get_actor_url(&config.instance_url(), &username);
     let inbox = get_inbox_url(&config.instance_url(), &username);
@@ -84,15 +111,16 @@ pub fn get_actor_object(
     let followers = get_followers_url(&config.instance_url(), &username);
     let following = get_following_url(&config.instance_url(), &username);
 
-    let private_key = deserialize_private_key(&user.private_key)
-        .map_err(|_| HttpError::InternalError)?;
-    let public_key_pem = get_public_key_pem(&private_key)
-        .map_err(|_| HttpError::InternalError)?;
+    let private_key = deserialize_private_key(&user.private_key)?;
+    let public_key_pem = get_public_key_pem(&private_key)?;
     let public_key = PublicKey {
         id: format!("{}#main-key", id),
         owner: id.clone(),
         public_key_pem: public_key_pem,
     };
+    let capabilities = ActorCapabilities {
+        accepts_chat_messages: Some(false),
+    };
     let avatar = match &user.profile.avatar_file_name {
         Some(file_name) => {
             let image = Image {
@@ -113,9 +141,15 @@ pub fn get_actor_object(
         },
         None => None,
     };
-    let capabilities = ActorCapabilities {
-        accepts_chat_messages: Some(false),
-    };
+    let properties = user.profile.extra_fields.clone()
+        .unpack().into_iter()
+        .map(|field| {
+            ActorProperty {
+                object_type: PROPERTY_VALUE.to_string(),
+                name: field.name,
+                value: field.value,
+            }
+        }).collect();
     let actor = Actor {
         context: Some(json!([
             AP_CONTEXT.to_string(),
@@ -134,6 +168,7 @@ pub fn get_actor_object(
         icon: avatar,
         image: banner,
         summary: None,
+        attachment: Some(properties),
     };
     Ok(actor)
 }
diff --git a/src/activitypub/fetcher.rs b/src/activitypub/fetcher.rs
index b5fae86..c31e758 100644
--- a/src/activitypub/fetcher.rs
+++ b/src/activitypub/fetcher.rs
@@ -92,6 +92,7 @@ pub async fn fetch_profile_by_actor_id(
     let actor_value: Value = serde_json::from_str(&actor_json)?;
     let actor: Actor = serde_json::from_value(actor_value.clone())?;
     let (avatar, banner) = fetch_avatar_and_banner(&actor, media_dir).await?;
+    let extra_fields = actor.extra_fields();
     let actor_address = format!(
         "{}@{}",
         actor.preferred_username,
@@ -102,8 +103,9 @@ pub async fn fetch_profile_by_actor_id(
         display_name: Some(actor.name),
         acct: actor_address,
         bio: actor.summary,
-        avatar: avatar,
-        banner: banner,
+        avatar,
+        banner,
+        extra_fields,
         actor: Some(actor_value),
     };
     Ok(profile_data)
diff --git a/src/activitypub/receiver.rs b/src/activitypub/receiver.rs
index 7cc3492..e0adaf9 100644
--- a/src/activitypub/receiver.rs
+++ b/src/activitypub/receiver.rs
@@ -146,13 +146,14 @@ pub async fn receive_activity(
             let profile = get_profile_by_actor_id(db_client, &actor.id).await?;
             let (avatar, banner) = fetch_avatar_and_banner(&actor, &config.media_dir()).await
                 .map_err(|_| ValidationError("failed to fetch image"))?;
+            let extra_fields = actor.extra_fields();
             let mut profile_data = ProfileUpdateData {
                 display_name: Some(actor.name),
                 bio: actor.summary.clone(),
                 bio_source: actor.summary,
                 avatar,
                 banner,
-                extra_fields: vec![],
+                extra_fields,
             };
             profile_data.clean()?;
             update_profile(db_client, &profile.id, profile_data).await?;
diff --git a/src/activitypub/views.rs b/src/activitypub/views.rs
index d2a1f9c..9f416e6 100644
--- a/src/activitypub/views.rs
+++ b/src/activitypub/views.rs
@@ -47,7 +47,8 @@ async fn get_actor(
 ) -> Result<HttpResponse, HttpError> {
     let db_client = &**get_database_client(&db_pool).await?;
     let user = get_user_by_name(db_client, &username).await?;
-    let actor = get_actor_object(&config, &user)?;
+    let actor = get_actor_object(&config, &user)
+        .map_err(|_| HttpError::InternalError)?;
     let response = HttpResponse::Ok()
         .content_type(ACTIVITY_CONTENT_TYPE)
         .json(actor);
diff --git a/src/activitypub/vocabulary.rs b/src/activitypub/vocabulary.rs
index a2409a6..f3c68d7 100644
--- a/src/activitypub/vocabulary.rs
+++ b/src/activitypub/vocabulary.rs
@@ -12,3 +12,4 @@ pub const PERSON: &str = "Person";
 pub const DOCUMENT: &str = "Document";
 pub const IMAGE: &str = "Image";
 pub const NOTE: &str = "Note";
+pub const PROPERTY_VALUE: &str = "PropertyValue";
diff --git a/src/models/profiles/queries.rs b/src/models/profiles/queries.rs
index a6fdbc7..1a88041 100644
--- a/src/models/profiles/queries.rs
+++ b/src/models/profiles/queries.rs
@@ -15,14 +15,15 @@ pub async fn create_profile(
     profile_data: &ProfileCreateData,
 ) -> Result<DbActorProfile, DatabaseError> {
     let profile_id = Uuid::new_v4();
+    let extra_fields = ExtraFields(profile_data.extra_fields.clone());
     let result = db_client.query_one(
         "
         INSERT INTO actor_profile (
             id, username, display_name, acct, bio, bio_source,
-            avatar_file_name, banner_file_name,
+            avatar_file_name, banner_file_name, extra_fields,
             actor_json
         )
-        VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+        VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
         RETURNING actor_profile
         ",
         &[
@@ -34,6 +35,7 @@ pub async fn create_profile(
             &profile_data.bio,
             &profile_data.avatar,
             &profile_data.banner,
+            &extra_fields,
             &profile_data.actor,
         ],
     ).await;
diff --git a/src/models/profiles/types.rs b/src/models/profiles/types.rs
index 6b37006..eed6bed 100644
--- a/src/models/profiles/types.rs
+++ b/src/models/profiles/types.rs
@@ -74,6 +74,7 @@ pub struct ProfileCreateData {
     pub bio: Option<String>,
     pub avatar: Option<String>,
     pub banner: Option<String>,
+    pub extra_fields: Vec<ExtraField>,
     pub actor: Option<Value>,
 }
 
diff --git a/src/models/users/queries.rs b/src/models/users/queries.rs
index 2a20169..305f874 100644
--- a/src/models/users/queries.rs
+++ b/src/models/users/queries.rs
@@ -145,6 +145,7 @@ pub async fn create_user(
         bio: None,
         avatar: None,
         banner: None,
+        extra_fields: vec![],
         actor: None,
     };
     let profile = create_profile(&transaction, &profile_data).await?;