const [exchange] = useMutation(require('ui/gql/mutations/exchange.gql'), {
    update(cache, { data } ) {
      const user = cache.readQuery({query: require('ui/gql/queries/getUser.gql')})

      cache.writeQuery({
        query: require('ui/gql/queries/getUser.gql'),
        data: {
          user: {
            ...user.user,
            gifts: [
              ...user.user.gifts,
              data.exchange.gift
            ]
          }
        }
      })
    }
  })