gistfile1.js

{
	"id": "12346ewe",
	"subject": "my meeting",
	"contacts": {
           "add": [
               "89179177-41d7-311f-90ef",
               {
                   "id": "473d122f-0a45-fef6-0138",
                   "role": "owner"
               }
           ]
        },
       "leads": {
           "delete": ["a28c2304-f9b6-97ca-f2e6"]
        },
	"tags": {
		"create": [{"name": "Important", "color": "Green"}],
	},
}


{
"invitees": [
	{"id": "89179177-41d7-311f-90ef-53a9ed038ae4", "name": "John Hancock", "status": "accepted", "_module": "Contacts", "_link": "contacts"},
	{"id": "a28c2304-f9b6-97ca-f2e6-53a9ed870664", "name": "King George III", "status": "declined", "_module": "Leads", "_link": "leads"},
	{"id": "473d122f-0a45-fef6-0138-53a9ed4a2ba5", "name": "Samuel Adams", "status": "accepted", "_module": "Contacts", "_link": "contacts"},
]
}

{
	"id": "12346ewe",
	"subject": "my meeting",
	"leads": {
		"add":["a28c2304-f9b6-97ca-f2e6-53a9ed870664"],
	},
	"contacts": {
		"add": ["89179177-41d7-311f-90ef-53a9ed038ae4", "473d122f-0a45-fef6-0138-53a9ed4a2ba5"]
	},
	"tags": "create": [{"name": "Important", "color": "Green"}],
}

[
'fields' => array(
array(
       	'name' => 'meeting_invitees',
	'label' => 'LBL_INVITEES',
	'type' => 'collection-field',
	'link' => 'invitees',
	'fields' => array('id', 'name', 'status'),
	'order_by' => 'name:asc',
),
),
]