curl --location -g --request POST '/{{vendorUid}}/contact/update/{{phoneNumber}}' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
// only send required items to update sending blank values may remove existing values
"first_name" : "Johan",
"last_name" : "Doe",
"email" : "info@smartwats.com",
"country" : "Saudia Arabia",
"language_code" : "ar",
"whatsapp_opt_out" : false,
"enable_ai_bot": true,
"groups" : "examplegroup1,examplegroup9",
"custom_fields" : {
"BDay" : "2026-04-22"
}
}'