Adding a Follower To A Campaign API endpoint

[archx3]

As a
Frontend engineer
I want to
programmatically add a follower to a campaign through an API,
so that
I can seamlessly integrate follower addition into our systems and automate the process.

Acceptance Criteria

- [ ] Adding a Follower to a Campaign

    Given I have valid API credentials and access rights,
    When I make a POST request to the endpoint with the required parameters (e.g., campaign ID, follower ID),
    Then the specified follower should be added to the specified campaign,
    And I should receive a 201 Created status code along with the details of the newly added campaign follower.

- [ ] Invalid Request Handling

    Given I have valid API credentials and access rights,
    When I make a POST request to the endpoint with invalid or missing parameters,
    Then the system should respond with a 400 Bad Request status code,
    And provide appropriate error messages indicating the missing or invalid parameters.