Forward message

{
  "type": "object",
  "required": [
    "message_id",
    "toRecipients"
  ],
  "additionalProperties": false,
  "properties": {
    "message_id": {
      "type": "string",
      "description": "Id of the message to forward."
    },
    "toRecipients": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "emailAddress": {
            "type": "object",
            "properties": {
              "address": {
                "type": "string"
              },
              "name": {
                "type": "string"
              }
            }
          }
        }
      }
    },
    "comment": {
      "type": "string",
      "description": "Text added above the forwarded message."
    }
  }
}