Hi Harsha,
I would suggest you to use relatedParty. You should put there a reference to your client. After that you can use the TMF 632 to get all the client details.
On the other hand you can extend relatedParty object with the needed details and provide strong typed JSON specification for that so the consumer of your API knows what are relatedParty attributes.
Regards
Sebastian Wawrzyniak
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Sebastian Wawrzyniak
Sonalake
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