diff --git a/composer.lock b/composer.lock
index f60bb9732f01b173848ccbc6edee1d07e2e71af7..f4761897ca898feb8596afe1d04de7897a66c5a7 100644
--- a/composer.lock
+++ b/composer.lock
@@ -228,11 +228,11 @@
         },
         {
             "name": "dbp/relay-core-bundle",
-            "version": "v0.1.19",
+            "version": "v0.1.22",
             "source": {
                 "type": "git",
                 "url": "https://gitlab.tugraz.at/dbp/relay/dbp-relay-core-bundle",
-                "reference": "d659cede5e17eb5e442987be6992fb63dc5ddee4"
+                "reference": "744e4df48e117ccad9b4c161b872b4eb68740bdd"
             },
             "require": {
                 "api-platform/core": "^2.6.3",
@@ -249,6 +249,7 @@
                 "symfony/event-dispatcher": "^5.3",
                 "symfony/expression-language": "^5.3",
                 "symfony/framework-bundle": "^5.3",
+                "symfony/messenger": "^5.3",
                 "symfony/mime": "^5.3",
                 "symfony/security-bundle": "^5.3",
                 "symfony/security-core": "^5.3",
@@ -287,7 +288,7 @@
             "license": [
                 "AGPL-3.0-or-later"
             ],
-            "time": "2021-10-25T08:53:54+00:00"
+            "time": "2021-11-04T14:32:50+00:00"
         },
         {
             "name": "doctrine/annotations",
@@ -1814,6 +1815,75 @@
             ],
             "time": "2020-11-03T09:10:25+00:00"
         },
+        {
+            "name": "symfony/amqp-messenger",
+            "version": "v5.3.7",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/amqp-messenger.git",
+                "reference": "7bf38ef8c72d51163aa9048d7a8abe03be33f2b4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/amqp-messenger/zipball/7bf38ef8c72d51163aa9048d7a8abe03be33f2b4",
+                "reference": "7bf38ef8c72d51163aa9048d7a8abe03be33f2b4",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2.5",
+                "symfony/deprecation-contracts": "^2.1",
+                "symfony/messenger": "^5.3"
+            },
+            "require-dev": {
+                "symfony/event-dispatcher": "^4.4|^5.0",
+                "symfony/process": "^4.4|^5.0",
+                "symfony/property-access": "^4.4|^5.0",
+                "symfony/serializer": "^4.4|^5.0"
+            },
+            "type": "symfony-bridge",
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Messenger\\Bridge\\Amqp\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony AMQP extension Messenger Bridge",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/amqp-messenger/tree/v5.3.7"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-08-25T04:45:08+00:00"
+        },
         {
             "name": "symfony/asset",
             "version": "v5.3.4",
@@ -2298,6 +2368,79 @@
             ],
             "time": "2021-03-23T23:28:01+00:00"
         },
+        {
+            "name": "symfony/doctrine-messenger",
+            "version": "v5.3.10",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/doctrine-messenger.git",
+                "reference": "971b7d5bd1c641cb8a699f4dcfd1079e2030761a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/doctrine-messenger/zipball/971b7d5bd1c641cb8a699f4dcfd1079e2030761a",
+                "reference": "971b7d5bd1c641cb8a699f4dcfd1079e2030761a",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2.5",
+                "symfony/messenger": "^5.1",
+                "symfony/service-contracts": "^1.1|^2"
+            },
+            "conflict": {
+                "doctrine/dbal": "<2.10",
+                "doctrine/persistence": "<1.3"
+            },
+            "require-dev": {
+                "doctrine/dbal": "^2.10|^3.0",
+                "doctrine/persistence": "^1.3|^2",
+                "symfony/property-access": "^4.4|^5.0",
+                "symfony/serializer": "^4.4|^5.0"
+            },
+            "type": "symfony-bridge",
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Messenger\\Bridge\\Doctrine\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Doctrine Messenger Bridge",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/doctrine-messenger/tree/v5.3.10"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-10-21T08:22:59+00:00"
+        },
         {
             "name": "symfony/error-handler",
             "version": "v5.3.7",
@@ -3132,6 +3275,96 @@
             ],
             "time": "2021-10-29T08:36:48+00:00"
         },
+        {
+            "name": "symfony/messenger",
+            "version": "v5.3.10",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/messenger.git",
+                "reference": "5146f9ecede00a3570f766a6c14cf494d479e038"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/messenger/zipball/5146f9ecede00a3570f766a6c14cf494d479e038",
+                "reference": "5146f9ecede00a3570f766a6c14cf494d479e038",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2.5",
+                "psr/log": "^1|^2|^3",
+                "symfony/amqp-messenger": "^5.1",
+                "symfony/deprecation-contracts": "^2.1",
+                "symfony/doctrine-messenger": "^5.1",
+                "symfony/polyfill-php80": "^1.16",
+                "symfony/redis-messenger": "^5.1"
+            },
+            "conflict": {
+                "symfony/event-dispatcher": "<4.4",
+                "symfony/framework-bundle": "<4.4",
+                "symfony/http-kernel": "<4.4",
+                "symfony/serializer": "<5.0"
+            },
+            "require-dev": {
+                "psr/cache": "^1.0|^2.0|^3.0",
+                "symfony/console": "^4.4|^5.0",
+                "symfony/dependency-injection": "^4.4|^5.0",
+                "symfony/event-dispatcher": "^4.4|^5.0",
+                "symfony/http-kernel": "^4.4|^5.0",
+                "symfony/process": "^4.4|^5.0",
+                "symfony/property-access": "^4.4|^5.0",
+                "symfony/routing": "^4.4|^5.0",
+                "symfony/serializer": "^5.0",
+                "symfony/service-contracts": "^1.1|^2",
+                "symfony/stopwatch": "^4.4|^5.0",
+                "symfony/validator": "^4.4|^5.0"
+            },
+            "suggest": {
+                "enqueue/messenger-adapter": "For using the php-enqueue library as a transport."
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Messenger\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Samuel Roze",
+                    "email": "samuel.roze@gmail.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Helps applications send and receive messages to/from other applications or via message queues",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/messenger/tree/v5.3.10"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-10-28T19:22:18+00:00"
+        },
         {
             "name": "symfony/mime",
             "version": "v5.3.8",
@@ -4187,6 +4420,73 @@
             ],
             "time": "2021-09-07T07:41:40+00:00"
         },
+        {
+            "name": "symfony/redis-messenger",
+            "version": "v5.3.10",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/redis-messenger.git",
+                "reference": "94ba9b20a7f2b28ec9e93823d7912ced0108b398"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/redis-messenger/zipball/94ba9b20a7f2b28ec9e93823d7912ced0108b398",
+                "reference": "94ba9b20a7f2b28ec9e93823d7912ced0108b398",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2.5",
+                "symfony/deprecation-contracts": "^2.1",
+                "symfony/messenger": "^5.1"
+            },
+            "require-dev": {
+                "symfony/property-access": "^4.4|^5.0",
+                "symfony/serializer": "^4.4|^5.0"
+            },
+            "type": "symfony-bridge",
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Messenger\\Bridge\\Redis\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Redis extension Messenger Bridge",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/redis-messenger/tree/v5.3.10"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-10-25T14:58:02+00:00"
+        },
         {
             "name": "symfony/routing",
             "version": "v5.3.7",