[Marketing]Add requester API key usage

[portuu3]

Description
In order to validate likers the api key to use when the validation is processed is the one from the post creator. So the requester should provide a valid API key

Motivation
Add the ability to validate likes

Implementation details

• Include the API key in the manifest.
• For this cases the manifest should always be encrypted.
• In case the requester didn't provide the API key, the likes validation should be skipped.