diff --git a/modules/emx_digitalBidAdapter.js b/modules/emx_digitalBidAdapter.js
index eb69e76a837..4a28b177ac1 100644
--- a/modules/emx_digitalBidAdapter.js
+++ b/modules/emx_digitalBidAdapter.js
@@ -23,7 +23,8 @@ const DEFAULT_CUR = 'USD';
 
 const EIDS_SUPPORTED = [
   { key: 'idl_env', source: 'liveramp.com', rtiPartner: 'idl', queryParam: 'idl' },
-  { key: 'uid2.id', source: 'uidapi.com', rtiPartner: 'UID2', queryParam: 'uid2' }
+  { key: 'uid2.id', source: 'uidapi.com', rtiPartner: 'UID2', queryParam: 'uid2' },
+  { key: 'oneKeyData', source: 'paf' }
 ];
 
 export const emxAdapter = {
@@ -190,12 +191,13 @@ export const emxAdapter = {
     };
   },
   formatEid(id, source, rtiPartner) {
+    let uid = { id };
+    if (rtiPartner) {
+      uid.ext = { rtiPartner };
+    }
     return {
       source,
-      uids: [{
-        id,
-        ext: { rtiPartner }
-      }]
+      uids: [uid]
     };
   }
 };
@@ -342,9 +344,15 @@ export const spec = {
 
         // support for adomain in prebid 5.0
         if (emxBid.adomain && emxBid.adomain.length) {
-          bidResponse.meta = {
-            advertiserDomains: emxBid.adomain
+          bidResponse.meta = Object.assign({}, bidResponse.meta, { advertiserDomains: emxBid.adomain });
+        }
+
+        if (response.ext && response.ext.paf && response.ext.paf.transmission && emxBid.ext && emxBid.ext.paf && emxBid.ext.paf.content_id) {
+          const pafResponse = {
+            content_id: emxBid.ext.paf.content_id,
+            transmission: response.ext.paf.transmission
           };
+          bidResponse.meta = Object.assign({}, bidResponse.meta, { paf: pafResponse });
         }
 
         emxBidResponses.push(bidResponse);
diff --git a/test/spec/modules/emx_digitalBidAdapter_spec.js b/test/spec/modules/emx_digitalBidAdapter_spec.js
index d99318b5ddc..55d5d8d2b91 100644
--- a/test/spec/modules/emx_digitalBidAdapter_spec.js
+++ b/test/spec/modules/emx_digitalBidAdapter_spec.js
@@ -555,9 +555,19 @@ describe('emx_digital Adapter', function () {
           'id': '987654321dcb',
           'price': 0.5,
           'ttl': 300,
-          'w': 300
+          'w': 300,
+          'ext': {
+            'paf': {
+              'content_id': 'paf_content'
+            }
+          }
         }]
-      }]
+      }],
+      'ext': {
+        'paf': {
+          'transmission': {'version': '0.1'}
+        }
+      }
     };
 
     const expectedResponse = [{
@@ -586,7 +596,13 @@ describe('emx_digital Adapter', function () {
       'netRevneue': true,
       'mediaType': 'banner',
       'ad': '<!-- Creative -->',
-      'ttl': 300
+      'ttl': 300,
+      'meta': {
+        'paf': {
+          'transmission': {'version': '0.1'},
+          'content_id': 'paf_content'
+        }
+      }
     }];
 
     it('should properly format bid response', function () {
@@ -711,8 +727,16 @@ describe('emx_digital Adapter', function () {
       const bidResponse = utils.deepClone(serverResponse);
       let result = spec.interpretResponse({body: bidResponse});
       expect(result[0].meta.advertiserDomains).to.deep.equal(expectedResponse[0].meta.advertiserDomains);
-      // case where adomains are not in request
-      expect(result[1].meta).to.not.exist;
+      // case where adomains are not in response
+      expect(result[1].meta.advertiserDomains).to.not.exist;
+    });
+
+    it('returns valid paf data', function () {
+      const bidResponse = utils.deepClone(serverResponse);
+      let result = spec.interpretResponse({body: bidResponse});
+      // case where paf data are not in response
+      expect(result[0].meta.paf).to.not.exist;
+      expect(result[1].meta.paf).to.deep.equal(expectedResponse[1].meta.paf);
     });
   });