diff --git a/backend/src/SignDocument/Controller/DigitalSignatureController.php b/backend/src/SignDocument/Controller/DigitalSignatureController.php
index a99548a..43877c9 100644
--- a/backend/src/SignDocument/Controller/DigitalSignatureController.php
+++ b/backend/src/SignDocument/Controller/DigitalSignatureController.php
@@ -25,13 +25,8 @@ class DigitalSignatureController extends AbstractController
     {
         $token = $request->server->get('HTTP_AUTHORIZATION');
 
-        $response =  $this->digitalSignatureService->getSignature($digitalSignatureRequest, $token);
-
-        return $this->createJsonResponse(
-            [
-                'hash' => $response->hash,
-                'content' => base64_encode($response->content),
-            ]
+        return $this->createJsonResponseFromObject(
+            $this->digitalSignatureService->getSignature($digitalSignatureRequest, $token)
         );
     }
 }
\ No newline at end of file
diff --git a/backend/src/SignDocument/Services/DigitalSignatureService.php b/backend/src/SignDocument/Services/DigitalSignatureService.php
index 7ff187e..9ad6385 100644
--- a/backend/src/SignDocument/Services/DigitalSignatureService.php
+++ b/backend/src/SignDocument/Services/DigitalSignatureService.php
@@ -46,7 +46,7 @@ class DigitalSignatureService
 
             return new DigitalSignatureResponse(
                 hash: $response,
-                content: file_get_contents(sprintf('%s.pdf', $this->document->tempFileName))
+                content: base64_encode(file_get_contents(sprintf('%s.pdf', $this->document->tempFileName)))
             );
         } catch (Exception $e) {
             throw new RuntimeException($e->getMessage());