How to write this in object structure?

ado.content = item [1]
how to write this in object structure?

Jun.09,2021

{ado:{content:item[1]}}

ado.content = item[1]

here item [1] represents an array object named item (with only one element), or what?
I think it might be

{ado:{content:{item:[1]}}}

let ado = {}
ado.content = item [1]

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