UNWIND $keys AS spotifyId
OPTIONAL MATCH (pp:PublicProduct { spotifyId: spotifyId })
ORDER BY pp.lastModifiedAt DESC
WITH collect(pp)[0] AS pp, spotifyId as spotifyId
RETURN spotifyId, CASE WHEN pp IS null THEN null ELSE {
  id: pp.id,
  name: pp.name,
  upc: pp.upc,
  imageUrl: pp.imageUrl,
  releaseDate: toString(pp.releaseDate),
  spotifyId: pp.spotifyId
} END