{ "$schema": "https://json-schema.org/draft/2020-12/schema", "title": "PublishBatchRequestEntry", "type": "object", "properties": { "Id": { "type": "string", "description": "An identifier for the message in this batch. The Id must be unique within a single PublishBatch request." }, "Message": { "type": "string", "description": "The body of the message" }, "Subject": { "type": "string", "description": "The subject of the batch message for email endpoints" }, "MessageStructure": { "type": "string", "description": "Set to json for per-protocol messages" }, "MessageAttributes": { "type": "object", "description": "Message attributes for this entry" }, "MessageDeduplicationId": { "type": "string", "description": "Deduplication ID for FIFO topics" }, "MessageGroupId": { "type": "string", "description": "Message group ID for FIFO topics" } } }