Empty JSON3.Object

I am quite new to Julia and struggling with quite simple task.

mutable struct XYZ
id::Int64
item::JSON3.Object
end

To that structure I am trying to add default/empty constructor (setting item to empty JSON3.Object):

XYZ()=XYZ(0, {})

That gives me an error:

ERROR: LoadError: LoadError: syntax: { } vector syntax is discontinued around myfile.jl line n

I could work around it this way:

str="""{}"""
emptyJson=JSON3.read(str)
XYZ()=XYZ(0, emptyJson)

but that seems quite ugly to me. Moreover, line
emptyJson=JSON3.read(str)
prints {} in the output, so I should be able to use XYZ()=XYZ(0, {}).
I don’t understand why it doesn’t work and what would be the best code for what I am trying to achieve.

Thank you.

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