A nice, legal change of obligation of a subject to a government (10)

I believe the answer is:

allegiance

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'obligation of a subject to a government' is the definition.
I can't judge whether this definition defines the answer.

'a nice legal change' is the wordplay.
'change' is an anagram indicator.
'nice'+'legal'='nicelegal'
'nicelegal' anagrammed gives 'llegiance'.
'a'+'llegiance'='ALLEGIANCE'

'of' acts as a link.

Can you help me to learn more?

(Other definitions for allegiance that I've seen before include "Loyalty to a group or cause" , "commitment to a cause" , "Loyalty (to a superior)" , "Fidelity" , "duty" .)

I've seen this clue in the Sydney Morning Herald.

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