Add tests to cycle via API

Hello all,

I am so sorry to bother you every day. Today I want to add a tests into a test cycle via API. I tried to use the following link

https://zfjcloud.docs.apiary.io/#reference/execution/get-execution/add-tests-to-cycle

I created a JWT for the endpoint, used the body which is included on the mentioned link, adjusted the values, but I am getting the error "method field is required.". 

If I saw correctly it is not included in the body.

Can you help me with this? As always I am including some screen shots.

Thanks for the tips,

Tibor