How to exctract this json to csv

[kahlenberg]

Thank you. I didn't test it yet but it should work.
Another question :)
I don't want to include 'all-services' in the code and maybe there will be more arrays than one, so for example:

{
"all-services": [
      {..},
      {..},
      {..}
      ],
 "other-service" : [
      {..},
      {..},
      {..}
      ]
}

How can I iterate all arrays? The name of arrays are not important, because those names will be already in the "SysteDUnit" field.
Second question:
I want to change the order of header. For example, instead "Message","Priority".. like in json, I want to have "Timestamp","SystemDUnit","Priority","Message".
How can I do it?