{
  "key": [{
    "text": "value",
    "ssml": "<speak><s>This is sentence two.</s></speak>"
  }],
  "key_2": [{
    "text": "value {var}",
    "ssml": "<speak><s>This is sentence two and {var}.</s></speak>"
  }],
  "invalid_key": {
    "xxx": "invalid key"
  }
}