diff --git a/spec/ace.md b/spec/ace.md
index 67e33c64..61842e30 100644
--- a/spec/ace.md
+++ b/spec/ace.md
@@ -474,11 +474,11 @@ Information about the pod that this app is executing in.
 
 Retrievable at `$AC_METADATA_URL/acMetadata/v1/pod`
 
-| Entry       | Method | Description |
-|-------------|--------|-------------|
-|annotations  | GET    | Top level annotations from Pod Manifest. Response body should conform to the sub-schema of the annotations property from the Pod specification (e.g. ```[ { "name": "ip-address", "value": "10.1.2.3" } ]```). |
-|manifest     | GET    | Fully-reified Pod Manifest JSON. |
-|uuid         | GET    | Pod UUID. The metadata service must return the `Content-Type` of `text/plain; charset=us-ascii` and the body of the response must be the pod UUID in canonical form. |
+| Entry       | Method | Content-Type | Description |
+|-------------|--------|--------------|-------------|
+|annotations  | GET    | application/json | Top level annotations from Pod Manifest. Response body should conform to the sub-schema of the annotations property from the Pod specification (e.g. ```[ { "name": "ip-address", "value": "10.1.2.3" } ]```). |
+|manifest     | GET    | application/json | Fully-reified Pod Manifest JSON. |
+|uuid         | GET    | text/plain; charset=us-ascii | Pod UUID. The body of the response must be the pod UUID in canonical form. |
 
 ### App Metadata
 
@@ -487,11 +487,11 @@ This is necessary to query for the correct endpoint metadata.
 
 Retrievable at `$AC_METADATA_URL/acMetadata/v1/apps/$AC_APP_NAME/`
 
-| Entry         | Method | Description |
-|---------------|--------|-------------|
-|annotations    | GET    | Annotations from Image Manifest merged with app annotations from Pod Manifest. Response body should conform to the sub-schema of the annotations property from the ACE and Pod specifications (e.g. ```[ { "name": "ip-address", "value": "10.1.2.3" } ]```). |
-|image/manifest | GET    | Original Image Manifest of the app. |
-|image/id       | GET    | Image ID (digest) this app is contained in. The metadata service must return the `Content-Type` of `text/plain; charset=us-ascii` and the body of the response must be the image ID as described in the ACI specification.|
+| Entry         | Method | Content-Type | Description |
+|---------------|--------|--------------|-------------|
+|annotations    | GET    | application/json | Annotations from Image Manifest merged with app annotations from Pod Manifest. Response body should conform to the sub-schema of the annotations property from the ACE and Pod specifications (e.g. ```[ { "name": "ip-address", "value": "10.1.2.3" } ]```). |
+|image/manifest | GET    | application/json | Original Image Manifest of the app. |
+|image/id       | GET    | text/plain; charset=us-ascii |  Image ID (digest) this app is contained in. The body of the response must be the image ID as described in the ACI specification.|
 
 ### Identity Endpoint
 
@@ -500,7 +500,7 @@ This gives a cryptographically verifiable identity to the pod based on its uniqu
 
 Accessible at `$AC_METADATA_URL/acMetadata/v1/pod/hmac`
 
-| Entry | Method | Description |
-|-------|--------|-------------|
-|sign   | POST   | Client applications must POST a form with content=<object to sign>. The response must specify a `Content-Type` header of `text/plain; charset=us-ascii` and the body must be a base64 encoded hmac-sha512 signature based on an HMAC key maintained by the Metadata Service. |
-|verify | POST   | Verify a signature from another pod. POST a form with content=<object that was signed>, uuid=<uuid of the pod that generated the signature>, signature=<base64 encoded signature>. Returns 200 OK if the signature passes and 403 Forbidden if the signature check fails. |
+| Entry | Method | Content-Type | Description |
+|-------|--------|--------------|-------------|
+|sign   | POST   | text/plain; charset=us-ascii | Client applications must POST a form with content=<object to sign>. The body must be a base64 encoded hmac-sha512 signature based on an HMAC key maintained by the Metadata Service. |
+|verify | POST   | text/plain; charset=us-ascii | Verify a signature from another pod. POST a form with content=<object that was signed>, uuid=<uuid of the pod that generated the signature>, signature=<base64 encoded signature>. Returns 200 OK if the signature passes and 403 Forbidden if the signature check fails. |