diff --git a/modules/livewrappedBidAdapter.js b/modules/livewrappedBidAdapter.js
index 84b80ac14d4..6b7c055b295 100644
--- a/modules/livewrappedBidAdapter.js
+++ b/modules/livewrappedBidAdapter.js
@@ -1,4 +1,4 @@
-import { isSafariBrowser, deepAccess, getWindowTop } from '../src/utils.js';
+import { isSafariBrowser, deepAccess, getWindowTop, mergeDeep } from '../src/utils.js';
 import { registerBidder } from '../src/adapters/bidderFactory.js';
 import { config } from '../src/config.js';
 import find from 'core-js-pure/features/array/find.js';
@@ -60,11 +60,17 @@ export const spec = {
     const bundle = find(bidRequests, hasBundleParam);
     const tid = find(bidRequests, hasTidParam);
     const schain = bidRequests[0].schain;
+    let ortb2 = config.getConfig('ortb2');
+    const eids = handleEids(bidRequests);
     bidUrl = bidUrl ? bidUrl.params.bidUrl : URL;
     url = url ? url.params.url : (getAppDomain() || getTopWindowLocation(bidderRequest));
     test = test ? test.params.test : undefined;
     var adRequests = bidRequests.map(bidToAdRequest);
 
+    if (eids) {
+      ortb2 = mergeDeep(ortb2 || {}, eids);
+    }
+
     const payload = {
       auctionId: auctionId ? auctionId.auctionId : undefined,
       publisherId: publisherId ? publisherId.params.publisherId : undefined,
@@ -86,7 +92,7 @@ export const spec = {
       cookieSupport: !isSafariBrowser() && storage.cookiesAreEnabled(),
       rcv: getAdblockerRecovered(),
       adRequests: [...adRequests],
-      rtbData: handleEids(bidRequests),
+      rtbData: ortb2,
       schain: schain
     };
 
diff --git a/test/spec/modules/livewrappedBidAdapter_spec.js b/test/spec/modules/livewrappedBidAdapter_spec.js
index 085848cb97d..fac1ae1d6a0 100644
--- a/test/spec/modules/livewrappedBidAdapter_spec.js
+++ b/test/spec/modules/livewrappedBidAdapter_spec.js
@@ -885,6 +885,37 @@ describe('Livewrapped adapter tests', function () {
     expect(data.rtbData.user.ext.eids).to.deep.equal(testbidRequest.bids[0].userIdAsEids);
   });
 
+  it('should merge user ids with existing ortb2', function() {
+    sandbox.stub(utils, 'isSafariBrowser').callsFake(() => false);
+    sandbox.stub(storage, 'cookiesAreEnabled').callsFake(() => true);
+
+    let origGetConfig = config.getConfig;
+    sandbox.stub(config, 'getConfig').callsFake(function (key) {
+      if (key === 'ortb2') {
+        return {user: {ext: {prop: 'value'}}};
+      }
+      return origGetConfig.apply(config, arguments);
+    });
+
+    let testbidRequest = clone(bidderRequest);
+    delete testbidRequest.bids[0].params.userId;
+    testbidRequest.bids[0].userIdAsEids = [
+      {
+        'source': 'pubcid.org',
+        'uids': [{
+          'id': 'publisher-common-id',
+          'atype': 1
+        }]
+      }
+    ];
+
+    let result = spec.buildRequests(testbidRequest.bids, testbidRequest);
+    let data = JSON.parse(result.data);
+    var expected = {user: {ext: {prop: 'value', eids: testbidRequest.bids[0].userIdAsEids}}}
+
+    expect(data.rtbData).to.deep.equal(expected);
+  });
+
   it('should send schain object if available', function() {
     sandbox.stub(utils, 'isSafariBrowser').callsFake(() => false);
     sandbox.stub(storage, 'cookiesAreEnabled').callsFake(() => true);