Message Read Callback

This callback will occur when a message a page has sent has been read by the user.
You can subscribe to this callback by selecting the message_reads field when setting up your webhook.

Example

{
   "sender":{
      "id":"USER_ID"
   },
   "recipient":{
      "id":"PAGE_ID"
   },
   "timestamp":1458668856463,
   "read":{
      "watermark":1458668856253,
      "seq":38
   }
}    

Fields

read object

Field Name Description Type

watermark

All messages that were sent before this timestamp were read

Number

seq

Sequence number

Number

The watermark field is used to determine which messages were read. It represents a timestamp indicating that all messages with a timestamp before watermark were read by the recipient.