Each event will send a JSON body containing specific data to that event. That information is as such:

EMAIL_OPENED:

{
	from_email: <mailbox used>
	to_email: <lead email>
  to_name: <lead name>
	time_opened: <time email was opened>
	campaign_name: <name of the campaign this event belongs to>
	campaign_id: <campaign id for your personal identification>
}

EMAIL_SENT:

{
	from_email: <mailbox used>
	to_email: <lead email>
  to_name: <lead name>
	time_sent: <time email was sent>
	campaign_name: <name of the campaign this event belongs to>
	campaign_id: <campaign id for your personal identification>
}

EMAIL_REPLIED:

{
event_type: "EMAIL_REPLY"
subject: <subject>
from_email: <mailbox used>
to_email: <lead email>
to_name: <lead name>
time_replied: <time email was replied to>
reply_body: <copy of the reply from the lead in full copy (html if there is)>
preview_text:  <copy of the latest reply in plain text>
campaign_name: <name of the campaign this event belongs to>
campaign_id: <campaign id for your personal identification>
sequence_number: <the sequence number that triggered this event>
}

LINK_CLICKED:

{
	from_email: <mailbox used>
	to_email: <lead email>
  to_name: <lead name>
	time_clicked: <time link was clicked>
	link_clicked: <which link was clicked>
	campaign_name: <name of the campaign this event belongs to>
	campaign_id: <campaign id for your personal identification>
}

LEAD_UNSUBSCRIBED:

{
	lead_email: <email of lead that unsubscribed>
	campaign_name: <name of the campaign this event belongs to>
	campaign_id: <campaign id for your personal identification>
}

CATEGORY_UPDATED: