I am having an app which writes in firebase and I want my another app with admin privileges to read and edit the data present in the custom key
[![*.*](https://i.stack.imgur.com/cF0ta.png)](https://i.stack.imgur.com/cF0ta.png)

If this is the picture assume where a random key a my key and I want to edit the data or add new data with the present data in that particular custom key.
Any help will be appreciated