diff --git a/hobo/agent/common/migrations/0005_userextraattributes.py b/hobo/agent/common/migrations/0005_userextraattributes.py
new file mode 100644
index 0000000..5df2128
--- /dev/null
+++ b/hobo/agent/common/migrations/0005_userextraattributes.py
@@ -0,0 +1,35 @@
+# Generated by Django 2.2.26 on 2023-01-03 09:30
+
+import django.contrib.postgres.fields.jsonb
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('common', '0004_alter_role_uuid'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='UserExtraAttributes',
+            fields=[
+                (
+                    'id',
+                    models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID'),
+                ),
+                ('data', django.contrib.postgres.fields.jsonb.JSONField(default=dict)),
+                (
+                    'user',
+                    models.OneToOneField(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='extra_attributes',
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+            ],
+        ),
+    ]
diff --git a/hobo/agent/common/models.py b/hobo/agent/common/models.py
index 132d036..de69f7d 100644
--- a/hobo/agent/common/models.py
+++ b/hobo/agent/common/models.py
@@ -1,5 +1,6 @@
+from django.conf import settings
 from django.contrib.auth.models import Group
-from django.contrib.postgres.fields import ArrayField
+from django.contrib.postgres.fields import ArrayField, JSONField
 from django.db import models
 
 
@@ -11,3 +12,12 @@ class Role(Group):
     emails_to_members = models.BooleanField(default=True)
 
     objects = models.Manager()
+
+
+class UserExtraAttributes(models.Model):
+    user = models.OneToOneField(
+        settings.AUTH_USER_MODEL,
+        on_delete=models.CASCADE,
+        related_name='extra_attributes',
+    )
+    data = JSONField(default=dict)
diff --git a/hobo/provisionning/utils.py b/hobo/provisionning/utils.py
index 1177cfc..9c80441 100644
--- a/hobo/provisionning/utils.py
+++ b/hobo/provisionning/utils.py
@@ -22,7 +22,7 @@ from django.db import IntegrityError
 from django.db.models.query import Q
 from django.db.transaction import atomic
 
-from hobo.agent.common.models import Role
+from hobo.agent.common.models import Role, UserExtraAttributes
 from hobo.multitenant.utils import provision_user_groups
 
 logger = logging.getLogger(__name__)
@@ -122,6 +122,12 @@ class NotificationProcessing:
                             mellon_user = UserSAMLIdentifier.objects.create(
                                 user=user, issuer=saml_issuer, name_id=o['uuid']
                             )
+                        excluded_attrs = ['roles', 'password']
+
+                        extra_attributes = UserExtraAttributes.objects.update_or_create(
+                            user=user,
+                            defaults={'data': {k: v for k, v in o.items() if k not in excluded_attrs}},
+                        )
                         if new:
                             logger.info('provisionned new user %s', user_str(user))
                         else:
diff --git a/tests/test_provisionning_middleware.py b/tests/test_provisionning_middleware.py
index 4f9d9cd..4ca7efe 100644
--- a/tests/test_provisionning_middleware.py
+++ b/tests/test_provisionning_middleware.py
@@ -32,12 +32,43 @@ def test_provisionning(app, db, settings):
             '@type': 'user',
             'data': [
                 {
+                    'id': 1,
                     'uuid': 'a' * 32,
+                    'username': 'johndoe',
                     'first_name': 'John',
                     'last_name': 'Doe',
                     'email': 'john.doe@example.net',
                     'is_superuser': True,
+                    'is_staff': True,
+                    'is_active': True,
                     'roles': [],
+                    'ou': {'foo': 'bar'},
+                    'date_joined': '2022-07-19T15:07:54.649675+02:00',
+                    'last_login': '2023-01-03T10:56:11.552280+01:00',
+                    'password': 'pbkdf2_sha256$150000$afVbUpBWl3v7$6D9xCdIf0lnjSGHm+BxPmkWvRvIq0vvP4c/FTFhZnkY=',
+                    'email_verified': False,
+                    'email_verified_date': None,
+                    'phone': '123456',
+                    'phone_verified_on': None,
+                    'modified': '2023-01-03T10:59:45.103274+01:00',
+                    'last_account_deletion_alert': None,
+                    'deactivation': None,
+                    'deactivation_reason': None,
+                    'first_name_verified': False,
+                    'last_name_verified': False,
+                    'address': 'Somewhere',
+                    'address_verified': False,
+                    'zipcode': '13333',
+                    'zipcode_verified': False,
+                    'city': 'Marseille',
+                    'city_verified': False,
+                    'phone_verified': False,
+                    'mobile': '56789',
+                    'mobile_verified': False,
+                    'preferred_username': 'Blue',
+                    'preferred_username_verified': False,
+                    'custom_attr': 'foo',
+                    'custom_attr_verified': False,
                 }
             ],
         },
@@ -50,4 +81,10 @@ def test_provisionning(app, db, settings):
         sign_url('/__provision__/?orig=%s' % 'hobo.example.invalid', 'xxx'), notification, status=200
     )
     assert User.objects.count() == 1
-    assert User.objects.get(email='john.doe@example.net')
+
+    user = User.objects.latest('pk')
+    assert user.email == 'john.doe@example.net'
+
+    excluded_attrs = ['password', 'roles']
+    expected_data = {k: v for k, v in notification['objects']['data'][0].items() if k not in excluded_attrs}
+    assert user.extra_attributes.data == expected_data