diff --git a/app/models/webhooks.py b/app/models/webhooks.py
index 228636e1..b9b191c2 100644
--- a/app/models/webhooks.py
+++ b/app/models/webhooks.py
@@ -199,10 +199,12 @@ def validate_string_payload_type(payload: str) -> tuple:
     ]
     model_params = model_utils.get_dict_of_parameters_from_models(known_models)
 
+    max_matches = 0
     for model, params in model_params.items():
-        if model_utils.is_parameter_in_model(params, payload_dict):
+        matches = model_utils.has_parameters_in_model(params, payload_dict)
+        if matches > max_matches:
+            max_matches = matches
             payload_type = model
-            break
 
     if payload_type:
         return payload_type, payload_dict
diff --git a/app/tests/models/test_webhooks.py b/app/tests/models/test_webhooks.py
index 05f99822..9b93075e 100644
--- a/app/tests/models/test_webhooks.py
+++ b/app/tests/models/test_webhooks.py
@@ -239,12 +239,37 @@ def test_validate_string_payload_type_valid_json(
         "TestModel": ["type"],
         "TestModel2": ["type2"],
     }
-    model_utils_mock.is_parameter_in_model.side_effect = [False, True]
+    model_utils_mock.has_parameters_in_model.side_effect = [0, 1, 0]
     assert webhooks.validate_string_payload_type('{"type": "test"}') == (
         "TestModel",
         {"type": "test"},
     )
-    assert model_utils_mock.is_parameter_in_model.call_count == 2
+    assert model_utils_mock.has_parameters_in_model.call_count == 3
+
+
+@patch("models.webhooks.model_utils")
+def test_validate_string_payload_same_params_in_multiple_models_returns_first_found(
+    model_utils_mock, caplog
+):
+    model_utils_mock.get_dict_of_parameters_from_models.return_value = {
+        "WrongModel": ["test"],
+        "TestModel": ["type", "type2"],
+        "TestModel2": ["type2"],
+        "TestModel3": ["type"],
+    }
+    model_utils_mock.has_parameters_in_model.side_effect = [0, 2, 0, 1]
+    response = webhooks.validate_string_payload_type(
+        '{"type": "test", "type2": "test"}'
+    )
+    assert response == (
+        "TestModel",
+        {"type": "test", "type2": "test"},
+    )
+    assert response != (
+        "TestModel3",
+        {"type": "test"},
+    )
+    assert model_utils_mock.has_parameters_in_model.call_count == 4
 
 
 def test_validate_string_payload_type_error_loading_json(caplog):