How to send announcement using Test-to-Speach service?

Hello,

I am trying to send announcement to my media player. I do not need to script it or schedule. This is one time deal. It could happen a few times per year.
This is my configuration file:

tts:
  - platform: google_translate
    service_name: google_say

I am trying to send it using Template section under Developer Tools. Can someone tell me what am I doing wrong here? I am trying to use the following script, but I tried different variations and nothing works.

{%
{
  service: "tts.google_say"
  entity_id:  "media_player.living_room_google_home"
  data:
    message: "May the Force be with you."
  }
%}

Whatever I try, I got the following error:

Error rendering template: TemplateSyntaxError: tag name expected

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