#set( $pageKey = $input.params('pageKey'))
{
  "TableName": "myTable",
  "IndexName":"OwnerIndex",
  "KeyConditionExpression": "#n_owner = :v_owner",
  "ExpressionAttributeValues": {
    ":v_owner": {"S": "$context.authorizer.claims.email"}
  },
  "ExpressionAttributeNames": {"#n_owner": "owner"}
}