How to use an array of objects as a function input

I have an array of objects.

[
      {
         'id':123,
         'name':'John'
      },
      {
         'id':456,
         'name':'Marie'
      }
  ]

How can I set the input of a function to accept the array of objects?

I have tried using an Object and setting the structure to a list.

However when I try to output the input (to check everything is working correctly) I am returned an empty array.

Any help would be greatly appreciated.
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