post https://3f1sc0nm33.execute-api.us-east-2.amazonaws.com/prod/api/v1/impression/add
This is the POST route to add impressions. Only record an impression if a user clicks on the benefit and it pops up a modal for the user to read more. If so, then an impression is recorded. If the user is signed in, please send in the wallet address of the user. Otherwise, the impression can be added without a wallet address.