diff --git a/deploy/helm/config/config.yaml b/deploy/helm/config/config.yaml
index 9c708e6a..0e1469ef 100644
--- a/deploy/helm/config/config.yaml
+++ b/deploy/helm/config/config.yaml
@@ -52,11 +52,3 @@ GLOBAL:
             - mobile
           Token.issue:
             - credentials
-
-  HANDLERS:
-    authentication:
-    - backend: spaceone.core.handler.authentication_handler.AuthenticationGRPCHandler
-      uri: grpc://identity:50051/v1/Domain/get_public_key
-    authorization:
-    - backend: spaceone.core.handler.authorization_handler.AuthorizationGRPCHandler
-      uri: grpc://identity:50051/v1/Authorization/verify
diff --git a/src/spaceone/identity/conf/global_conf.py b/src/spaceone/identity/conf/global_conf.py
index 510290eb..b1b5955b 100644
--- a/src/spaceone/identity/conf/global_conf.py
+++ b/src/spaceone/identity/conf/global_conf.py
@@ -66,6 +66,7 @@
     "SpaceConnector": {
         "backend": "spaceone.core.connector.space_connector.SpaceConnector",
         "endpoints": {
+            "identity": "grpc://localhost:50051",
             "plugin": "grpc://plugin:50051",
             "secret": "grpc://secret:50051",
             "repository": "grpc://repository:50051",
diff --git a/src/spaceone/identity/model/api_key/request.py b/src/spaceone/identity/model/api_key/request.py
index 34f7c694..5a50f8e4 100644
--- a/src/spaceone/identity/model/api_key/request.py
+++ b/src/spaceone/identity/model/api_key/request.py
@@ -56,7 +56,6 @@ class APIKeySearchQueryRequest(BaseModel):
     query: Union[dict, None] = None
     api_key_id: Union[str, None] = None
     name: Union[str, None] = None
-    owner_type: str = "USER"
     user_id: Union[str, None] = None
     state: Union[str, None] = None
     domain_id: str
@@ -64,6 +63,5 @@ class APIKeySearchQueryRequest(BaseModel):
 
 class APIKeyStatQueryRequest(BaseModel):
     query: dict
-    owner_type: str = "USER"
     domain_id: str
     user_id: Union[str, None] = None
diff --git a/src/spaceone/identity/service/api_key_service.py b/src/spaceone/identity/service/api_key_service.py
index cb209d94..afd97ec2 100644
--- a/src/spaceone/identity/service/api_key_service.py
+++ b/src/spaceone/identity/service/api_key_service.py
@@ -183,7 +183,6 @@ def list(self, params: APIKeySearchQueryRequest) -> Union[APIKeysResponse, dict]
                 'query': 'dict',
                 'api_key_id': 'str',
                 'name': 'str',
-                'owner_type': 'str',
                 'user_id': 'str',
                 'state': 'str',
                 'domain_id': 'str'      # required
@@ -208,7 +207,6 @@ def stat(self, params: APIKeyStatQueryRequest) -> dict:
         Args:
             params (dict): {
                 'query': 'dict',        # required
-                'owner_type': 'str',
                 'domain_id': 'str',     # required
                 'user_id': 'str',       # from meta
             }
@@ -219,6 +217,8 @@ def stat(self, params: APIKeyStatQueryRequest) -> dict:
             }
         """
         query = params.query or {}
+        query = self._append_owner_type_filter(query)
+
         return self.api_key_mgr.stat_api_keys(query)
 
     @staticmethod
@@ -236,7 +236,6 @@ def _get_expired_at(expired_at: str) -> str:
     @staticmethod
     def _check_expired_at(expired_at: str) -> None:
         one_year_later = datetime.now() + timedelta(days=365)
-        print(one_year_later)
 
         if one_year_later.strftime("%Y-%m-%d %H:%M:%S") < expired_at:
             raise ERROR_API_KEY_EXPIRED_LIMIT(expired_at=expired_at)
diff --git a/src/spaceone/identity/service/domain_service.py b/src/spaceone/identity/service/domain_service.py
index 4e98e2dc..541e72a8 100644
--- a/src/spaceone/identity/service/domain_service.py
+++ b/src/spaceone/identity/service/domain_service.py
@@ -3,6 +3,7 @@
 
 from spaceone.core.service import *
 from spaceone.core.service.utils import *
+from spaceone.core import utils
 
 from spaceone.identity.manager.external_auth_manager import ExternalAuthManager
 from spaceone.identity.manager.domain_manager import DomainManager
@@ -17,11 +18,10 @@
 _LOGGER = logging.getLogger(__name__)
 
 
-# @authentication_handler
-# @authorization_handler
-# @request_mutation_handler
-# @response_mutation_handler
-# @event_handler
+@authentication_handler
+@authorization_handler
+@mutation_handler
+@event_handler
 class DomainService(BaseService):
 
     service = "identity"
@@ -201,7 +201,7 @@ def get_public_key(
         """
 
         pub_jwk = self.domain_secret_mgr.get_domain_public_key(params.domain_id)
-        return DomainSecretResponse(public_key=str(pub_jwk), domain_id=params.domain_id)
+        return DomainSecretResponse(public_key=utils.dump_json(pub_jwk), domain_id=params.domain_id)
 
     @transaction(scope='system_admin:read')
     @append_query_filter(["domain_id", "name", "state"])