{
  "version": "2020-03-12",
  "globalMessages": [
    {
      "name": "[string]Name of message for all users",
      "metadata": "[string]Metadata corresponding to the content of the message to all users",
      "readAcquireActions": [
        {
          "action": "[string]Types of actions to be performed in the stamp sheet",
          "request": "[string]JSON of request"
        }
      ],
      {
      }
      "expiresAt": "[long?]Message expiration date for all users"
    }
  ]
}