diff --git a/src/containers/CheckoutPage/CheckoutPage.duck.js b/src/containers/CheckoutPage/CheckoutPage.duck.js
index 71d57d95..64871dca 100644
--- a/src/containers/CheckoutPage/CheckoutPage.duck.js
+++ b/src/containers/CheckoutPage/CheckoutPage.duck.js
@@ -1,5 +1,5 @@
 import { pick } from 'lodash';
-import { updatedEntities, denormalisedEntities } from '../../util/data';
+import { denormalisedResponseEntities } from '../../util/data';
 import { storableError } from '../../util/errors';
 import { TRANSITION_REQUEST } from '../../util/types';
 import * as log from '../../util/log';
@@ -176,10 +176,11 @@ export const speculateTransaction = (listingId, bookingStart, bookingEnd) => (
   return sdk.transactions
     .initiateSpeculative(bodyParams, queryParams)
     .then(response => {
-      const transactionId = response.data.data.id;
-      const entities = updatedEntities({}, response.data);
-      const denormalised = denormalisedEntities(entities, 'transaction', [transactionId]);
-      const tx = denormalised[0];
+      const entities = denormalisedResponseEntities(response);
+      if (entities.length !== 1) {
+        throw new Error('Expected a resource in the sdk.transactions.initiateSpeculative response');
+      }
+      const tx = entities[0];
       dispatch(speculateTransactionSuccess(tx));
     })
     .catch(e => {
diff --git a/src/containers/ListingPage/ListingPage.duck.js b/src/containers/ListingPage/ListingPage.duck.js
index 6c6b9d88..1e33acf7 100644
--- a/src/containers/ListingPage/ListingPage.duck.js
+++ b/src/containers/ListingPage/ListingPage.duck.js
@@ -2,7 +2,7 @@ import { pick } from 'lodash';
 import { types as sdkTypes } from '../../util/sdkLoader';
 import { storableError } from '../../util/errors';
 import { addMarketplaceEntities } from '../../ducks/marketplaceData.duck';
-import { updatedEntities, denormalisedEntities } from '../../util/data';
+import { denormalisedResponseEntities } from '../../util/data';
 import { TRANSITION_ENQUIRE } from '../../util/types';
 import { fetchCurrentUser } from '../../ducks/user.duck';
 
@@ -117,10 +117,8 @@ export const fetchReviews = listingId => (dispatch, getState, sdk) => {
   return sdk.reviews
     .query({ listing_id: listingId, state: 'public', include: ['author', 'author.profileImage'] })
     .then(response => {
-      const entities = updatedEntities({}, response.data);
-      const reviewIds = response.data.data.map(d => d.id);
-      const denormalized = denormalisedEntities(entities, 'review', reviewIds);
-      dispatch(fetchReviewsSuccess(denormalized));
+      const reviews = denormalisedResponseEntities(response);
+      dispatch(fetchReviewsSuccess(reviews));
     })
     .catch(e => {
       dispatch(fetchReviewsError(storableError(e)));
diff --git a/src/containers/ProfilePage/ProfilePage.duck.js b/src/containers/ProfilePage/ProfilePage.duck.js
index 58ac3b6d..1d34d324 100644
--- a/src/containers/ProfilePage/ProfilePage.duck.js
+++ b/src/containers/ProfilePage/ProfilePage.duck.js
@@ -1,6 +1,6 @@
 import { addMarketplaceEntities } from '../../ducks/marketplaceData.duck';
 import { fetchCurrentUser } from '../../ducks/user.duck';
-import { updatedEntities, denormalisedEntities } from '../../util/data';
+import { denormalisedResponseEntities } from '../../util/data';
 import { storableError } from '../../util/errors';
 
 // ================ Action types ================ //
@@ -139,10 +139,8 @@ export const queryUserReviews = userId => (dispatch, getState, sdk) => {
   sdk.reviews
     .query({ subject_id: userId, state: 'public', include: ['author', 'author_profile_image'] })
     .then(response => {
-      const entities = updatedEntities({}, response.data);
-      const reviewIds = response.data.data.map(d => d.id);
-      const denormalized = denormalisedEntities(entities, 'review', reviewIds);
-      dispatch(queryReviewsSuccess(denormalized));
+      const reviews = denormalisedResponseEntities(response);
+      dispatch(queryReviewsSuccess(reviews));
     })
     .catch(e => dispatch(queryReviewsError(e)));
 };
diff --git a/src/containers/ProfileSettingsPage/ProfileSettingsPage.duck.js b/src/containers/ProfileSettingsPage/ProfileSettingsPage.duck.js
index 1b808cc3..65328756 100644
--- a/src/containers/ProfileSettingsPage/ProfileSettingsPage.duck.js
+++ b/src/containers/ProfileSettingsPage/ProfileSettingsPage.duck.js
@@ -1,4 +1,4 @@
-import { updatedEntities, denormalisedEntities } from '../../util/data';
+import { denormalisedResponseEntities } from '../../util/data';
 import { storableError } from '../../util/errors';
 import { currentUserShowSuccess } from '../../ducks/user.duck';
 
@@ -134,11 +134,11 @@ export const updateProfile = actionPayload => {
       .then(response => {
         dispatch(updateProfileSuccess(response));
 
-        // Include profile image to denormalized user entity
-        const currentUserId = response.data.data.id;
-        const entities = updatedEntities({}, response.data);
-        const denormalised = denormalisedEntities(entities, 'currentUser', [currentUserId]);
-        const currentUser = denormalised[0];
+        const entities = denormalisedResponseEntities(response);
+        if (entities.length !== 1) {
+          throw new Error('Expected a resource in the sdk.currentUser.updateProfile response');
+        }
+        const currentUser = entities[0];
 
         // Update current user in state.user.currentUser through user.duck.js
         dispatch(currentUserShowSuccess(currentUser));
diff --git a/src/containers/TransactionPage/TransactionPage.duck.js b/src/containers/TransactionPage/TransactionPage.duck.js
index ea007131..ad25d315 100644
--- a/src/containers/TransactionPage/TransactionPage.duck.js
+++ b/src/containers/TransactionPage/TransactionPage.duck.js
@@ -10,7 +10,11 @@ import {
   TRANSITION_REVIEW_2_BY_PROVIDER,
 } from '../../util/types';
 import * as log from '../../util/log';
-import { updatedEntities, denormalisedEntities } from '../../util/data';
+import {
+  updatedEntities,
+  denormalisedEntities,
+  denormalisedResponseEntities,
+} from '../../util/data';
 import { addMarketplaceEntities } from '../../ducks/marketplaceData.duck';
 import { fetchCurrentUserNotifications } from '../../ducks/user.duck';
 
@@ -302,15 +306,13 @@ const fetchMessages = (txId, page) => (dispatch, getState, sdk) => {
   return sdk.messages
     .query({ transaction_id: txId, include: ['sender', 'sender.profileImage'], ...paging })
     .then(response => {
-      const entities = updatedEntities({}, response.data);
-      const messageIds = response.data.data.map(d => d.id);
-      const denormalizedMessages = denormalisedEntities(entities, 'message', messageIds);
+      const messages = denormalisedResponseEntities(response);
       const { totalItems, totalPages, page: fetchedPage } = response.data.meta;
       const pagination = { totalItems, totalPages, page: fetchedPage };
       const totalMessages = getState().TransactionPage.totalMessages;
 
       // Original fetchMessages call succeeded
-      dispatch(fetchMessagesSuccess(denormalizedMessages, pagination));
+      dispatch(fetchMessagesSuccess(messages, pagination));
 
       // Check if totalItems has changed between fetched pagination pages
       // if totalItems has changed, fetch first page again to include new incoming messages.
diff --git a/src/ducks/user.duck.js b/src/ducks/user.duck.js
index 4e867608..45805c41 100644
--- a/src/ducks/user.duck.js
+++ b/src/ducks/user.duck.js
@@ -1,4 +1,4 @@
-import { updatedEntities, denormalisedEntities } from '../util/data';
+import { denormalisedResponseEntities } from '../util/data';
 import { storableError } from '../util/errors';
 import { TRANSITION_REQUEST, TRANSITION_REQUEST_AFTER_ENQUIRY } from '../util/types';
 import * as log from '../util/log';
@@ -335,11 +335,12 @@ export const fetchCurrentUser = () => (dispatch, getState, sdk) => {
   return sdk.currentUser
     .show({ include: ['profileImage'] })
     .then(response => {
-      // Include profile image to denormalized user entity
-      const currentUserId = response.data.data.id;
-      const entities = updatedEntities({}, response.data);
-      const denormalised = denormalisedEntities(entities, 'currentUser', [currentUserId]);
-      const currentUser = denormalised[0];
+      const entities = denormalisedResponseEntities(response);
+      if (entities.length !== 1) {
+        throw new Error('Expected a resource in the sdk.currentUser.show response');
+      }
+      const currentUser = entities[0];
+
       // set current user id to the logger
       log.setUserId(currentUser.id.uuid);
       dispatch(currentUserShowSuccess(currentUser));
diff --git a/src/util/data.js b/src/util/data.js
index 70c5b13c..80969e45 100644
--- a/src/util/data.js
+++ b/src/util/data.js
@@ -104,6 +104,29 @@ export const denormalisedEntities = (entities, type, ids) => {
   });
 };
 
+/**
+ * Denormalise the data from the given SDK response
+ *
+ * @param {Object} sdkResponse response object from an SDK call
+ *
+ * @return {Array} entities in the response with relationships
+ * denormalised from the included data
+ */
+export const denormalisedResponseEntities = sdkResponse => {
+  const apiResponse = sdkResponse.data;
+  const data = apiResponse.data;
+  const resources = Array.isArray(data) ? data : [data];
+
+  if (!data || resources.length === 0) {
+    return [];
+  }
+
+  const entities = updatedEntities({}, apiResponse);
+  const type = resources[0].type;
+  const resourceIds = resources.map(r => r.id);
+  return denormalisedEntities(entities, type, resourceIds);
+};
+
 /**
  * Create shell objects to ensure that attributes etc. exists.
  *