Amazon Pinpoint Default Message Structure

{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/amazon-pinpoint/refs/heads/main/json-structure/amazon-pinpoint-default-message-structure.json",
  "name": "DefaultMessage",
  "description": "Specifies the default message for all channels.",
  "type": "object",
  "properties": {
    "Body": {
      "allOf": [
        {
          "$ref": "#/components/schemas/__string"
        },
        {
          "description": "The default body of the message."
        }
      ]
    },
    "Substitutions": {
      "allOf": [
        {
          "$ref": "#/components/schemas/MapOfListOf__string"
        },
        {
          "description": "The default message variables to use in the message. You can override these default variables with individual address variables."
        }
      ]
    }
  }
}