query PreviewSmsTemplate($type: String!, $recipientType: String!, $body: String!) {
  previewSmsTemplate(type: $type, recipientType: $recipientType, body: $body) {
    text
    charCount
    availableFields {
      token
      name
      label
      kind
      group
      allowedIn
    }
  }
}

{
  "type": "string",
  "recipientType": "string",
  "body": "string"
}

{
  "data": {
    "previewSmsTemplate": {
      "text": "string",
      "charCount": 1,
      "availableFields": [
        {
          "token": "string",
          "name": "string",
          "label": "string",
          "kind": "string",
          "group": "string",
          "allowedIn": [
            "string"
          ]
        }
      ]
    }
  }
}