Verifying is_selected flag in getInterestedMerchants logic for User ID: 75
User's interested merchant IDs: 

Category: Fashion
 [ ] Merchant: OP (ID: 77)
 [ ] Merchant: Levis (ID: 47)
 [ ] Merchant: Adidas (ID: 43)
 [ ] Merchant: NIke (ID: 46)
 [ ] Merchant: H&M (ID: 48)

NOTE: No merchants from these categories were in the user's interests, but flag was present.
SUCCESS: is_selected flag present in all returned merchants.