diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..86114d92
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+# Go Dep
+vendor
diff --git a/Gopkg.lock b/Gopkg.lock
index a4928310..f0d4dba5 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -2,32 +2,43 @@
 
 
 [[projects]]
+  digest = "1:56c130d885a4aacae1dd9c7b71cfe39912c7ebc1ff7d2b46083c8812996dc43b"
   name = "github.com/davecgh/go-spew"
   packages = ["spew"]
+  pruneopts = ""
   revision = "346938d642f2ec3594ed81d874461961cd0faa76"
   version = "v1.1.0"
 
 [[projects]]
+  digest = "1:256484dbbcd271f9ecebc6795b2df8cad4c458dd0f5fd82a8c2fa0c29f233411"
   name = "github.com/pmezard/go-difflib"
   packages = ["difflib"]
+  pruneopts = ""
   revision = "792786c7400a136282c1664665ae0a8db921c6c2"
   version = "v1.0.0"
 
 [[projects]]
+  digest = "1:a30066593578732a356dc7e5d7f78d69184ca65aeeff5939241a3ab10559bb06"
   name = "github.com/stretchr/testify"
   packages = ["assert"]
+  pruneopts = ""
   revision = "12b6f73e6084dad08a7c6e575284b177ecafbc71"
   version = "v1.2.1"
 
 [[projects]]
+  digest = "1:e85837cb04b78f61688c6eba93ea9d14f60d611e2aaf8319999b1a60d2dafbfa"
   name = "gopkg.in/urfave/cli.v1"
   packages = ["."]
+  pruneopts = ""
   revision = "cfb38830724cc34fedffe9a2a29fb54fa9169cd1"
   version = "v1.20.0"
 
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "21bf02839d69eb4ab638d20ad48614cf2e71753b2005ef5fa2b05cb9704ab5d2"
+  input-imports = [
+    "github.com/stretchr/testify/assert",
+    "gopkg.in/urfave/cli.v1",
+  ]
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/events/appsync.go b/events/appsync.go
index d6ba49ec..3ada83f3 100644
--- a/events/appsync.go
+++ b/events/appsync.go
@@ -9,6 +9,26 @@ type AppSyncResolverTemplate struct {
 	Payload   json.RawMessage  `json:"payload"`
 }
 
+// AppSyncIAMIdentity contains information about the caller authed via IAM.
+type AppSyncIAMIdentity struct {
+	AccountID             string   `json:"accountId"`
+	CognitoIdentityPoolID string   `json:"cognitoIdentityPoolId"`
+	CognitoIdentityID     string   `json:"cognitoIdentityId"`
+	SourceIP              []string `json:"sourceIp"`
+	Username              string   `json:"username"`
+	UserARN               string   `json:"userArn"`
+}
+
+// AppSyncCognitoIdentity contains information about the caller authed via Cognito.
+type AppSyncCognitoIdentity struct {
+	Sub                 string                 `json:"sub"`
+	Issuer              string                 `json:"issuer"`
+	Username            string                 `json:"username"`
+	Claims              map[string]interface{} `json:"claims"`
+	SourceIP            []string               `json:"sourceIp"`
+	DefaultAuthStrategy string                 `json:"defaultAuthStrategy"`
+}
+
 // AppSyncOperation specifies the operation type supported by Lambda operations
 type AppSyncOperation string
 
diff --git a/events/appsync_test.go b/events/appsync_test.go
index 583b5fda..caba4275 100644
--- a/events/appsync_test.go
+++ b/events/appsync_test.go
@@ -47,3 +47,41 @@ func TestAppSyncResolverTemplate_batchinvoke(t *testing.T) {
 
 	assert.JSONEq(t, string(inputJSON), string(outputJSON))
 }
+
+func TestAppSyncIdentity_IAM(t *testing.T) {
+	inputJSON, err := ioutil.ReadFile("./testdata/appsync-identity-iam.json")
+	if err != nil {
+		t.Errorf("could not open test file. details: %v", err)
+	}
+
+	var inputIdentity AppSyncIAMIdentity
+	if err = json.Unmarshal(inputJSON, &inputIdentity); err != nil {
+		t.Errorf("could not unmarshal identity. details: %v", err)
+	}
+
+	outputJSON, err := json.Marshal(inputIdentity)
+	if err != nil {
+		t.Errorf("could not marshal identity. details: %v", err)
+	}
+
+	assert.JSONEq(t, string(inputJSON), string(outputJSON))
+}
+
+func TestAppSyncIdentity_Cognito(t *testing.T) {
+	inputJSON, err := ioutil.ReadFile("./testdata/appsync-identity-cognito.json")
+	if err != nil {
+		t.Errorf("could not open test file. details: %v", err)
+	}
+
+	var inputIdentity AppSyncCognitoIdentity
+	if err = json.Unmarshal(inputJSON, &inputIdentity); err != nil {
+		t.Errorf("could not unmarshal identity. details: %v", err)
+	}
+
+	outputJSON, err := json.Marshal(inputIdentity)
+	if err != nil {
+		t.Errorf("could not marshal identity. details: %v", err)
+	}
+
+	assert.JSONEq(t, string(inputJSON), string(outputJSON))
+}
diff --git a/events/testdata/appsync-identity-cognito.json b/events/testdata/appsync-identity-cognito.json
new file mode 100644
index 00000000..0b0ee5ff
--- /dev/null
+++ b/events/testdata/appsync-identity-cognito.json
@@ -0,0 +1,18 @@
+{
+  "sub": "123-456",
+  "issuer": "https://cognito-idp.us-east-1.amazonaws.com/us-east-1_abc",
+  "username": "user1",
+  "claims": {
+    "sub": "123-456",
+    "aud": "abcdefg",
+    "event_id": "123-123-123",
+    "token_use": "id",
+    "auth_time": 1551226125,
+    "iss": "https://cognito-idp.us-east-1.amazonaws.com/us-east-1_abc",
+    "cognito:username": "user1",
+    "exp": 1551228178628,
+    "iat": 1551228178629
+  },
+  "sourceIp": ["192.168.196.186", "193.168.196.186"],
+  "defaultAuthStrategy": "ALLOW"
+}
diff --git a/events/testdata/appsync-identity-iam.json b/events/testdata/appsync-identity-iam.json
new file mode 100644
index 00000000..a3802625
--- /dev/null
+++ b/events/testdata/appsync-identity-iam.json
@@ -0,0 +1,8 @@
+{
+  "accountId": "accountid123",
+  "cognitoIdentityPoolId": "identitypoolid123",
+  "cognitoIdentityId": "identityid123",
+  "sourceIp": ["192.168.196.186", "193.168.196.186"],
+  "username": "user1",
+  "userArn": "arn:aws:iam::123456789012:user/appsync"
+}