diff --git a/api/agent/protocol/json_test.go b/api/agent/protocol/json_test.go
index f485ad94a..19391b429 100644
--- a/api/agent/protocol/json_test.go
+++ b/api/agent/protocol/json_test.go
@@ -8,6 +8,7 @@ import (
 	"io/ioutil"
 	"io"
 	"encoding/json"
+	"reflect"
 )
 
 type RequestData struct {
@@ -33,7 +34,8 @@ func TestJSONProtocolDumpJSONRequestWithData(t *testing.T) {
 		Host: "localhost:8080",
 	}
 	var buf bytes.Buffer
-	json.NewEncoder(&buf).Encode(RequestData{A: "a"})
+	rDataBefore := RequestData{A: "a"}
+	json.NewEncoder(&buf).Encode(rDataBefore)
 	req.Body = ioutil.NopCloser(&buf)
 
 	r, w := io.Pipe()
@@ -56,6 +58,15 @@ func TestJSONProtocolDumpJSONRequestWithData(t *testing.T) {
 	if err != nil {
 		t.Error(err.Error())
 	}
+	rDataAfter := new(RequestData)
+	err = json.Unmarshal([]byte(incomingReq.Body), &rDataAfter)
+	if err != nil {
+		t.Error(err.Error())
+	}
+	if rDataBefore.A != rDataAfter.A {
+		t.Errorf("Request data assertion mismatch: expected: %s, got %s",
+			rDataBefore.A, rDataAfter.A)
+	}
 }
 
 func TestJSONProtocolDumpJSONRequestWithoutData(t *testing.T) {
@@ -99,4 +110,9 @@ func TestJSONProtocolDumpJSONRequestWithoutData(t *testing.T) {
 	if err != nil {
 		t.Error(err.Error())
 	}
+	if ok := reflect.DeepEqual(req.Header, incomingReq.Headers); !ok {
+		t.Errorf("Request headers assertion mismatch: expected: %s, got %s",
+			req.Header, incomingReq.Headers)
+
+	}
 }
diff --git a/docs/function-format.md b/docs/function-format.md
index db4ede1b1..3f7d13ab0 100644
--- a/docs/function-format.md
+++ b/docs/function-format.md
@@ -88,7 +88,9 @@ Internally function receives data in following format:
 
 ```json
 {
-  "body": "{\"some\": \"input\"}",
+  "body": {
+    "some": "data"
+  },
   "headers": {
     "yo": ["dawg"]
   }
@@ -102,7 +104,7 @@ Function's output format should have following format:
   "status_code": 200,
   "body": "...",
   "headeres": {
-    "A": "b"
+    "A": ["b"]
   }
 }
 ```