{
  "data": {
    "organizationId": "yourOrganizationId",
    "documentId": "yourDocumentId",
    "actionUser": {
      "userId": "yourUserId",
      "name": "User Name",
      "email": "user@example.com"
    },
    "displayHeadlineMessageTemplate": "This is main template, you can pass variables using curly brackets like this: {actionUser}, {recipientUser}, {yourCustomVariableWithStringValue}",
    "displayHeadlineMessageTemplateData": {
      "actionUser": {
        "userId": "yourUserId",
        "name": "User Name",
        "email": "user@example.com"
      },
      "recipientUser": {
        "userId": "recipientUserId",
        "name": "Recipient Name",
        "email": "recipient@example.com"
      },
      "yourCustomField": "Variable will be replaced with this text"
    },
    "displayBodyMessage": "This is body message (Secondary message)",
    "notifyUsers": [
      {
        "email": "test@example.com",
        "userId": "testingUserId"
      },
      {
        "userId": "yourUserId",
        "name": "User Name",
        "email": "user@example.com"
      }
    ]
  }
}

{
  "result": {
    "status": "success",
    "message": "Notification added successfully.",
    "data": {
      "success": true,
      "message": "Notification added successfully."
    }
  }
}

{
  "error": {
    "message": "ERROR_MESSAGE",
    "status": "INVALID_ARGUMENT"
  }
}