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{
    "message": {
        "fromname": "AC Admin",
     "fromemail": "[email protected]",
     "reply2": "[email protected]",
     "subject": "You are subscribing to %LISTNAME%",
     "preheader_text": "Pre-header Text",
     "text": "hello",
     "html": "<div>hello</div>"
    }
}

{
    "message": {
        "fromname": "AC Admin",
        "fromemail": "[email protected]",
        "reply2": "[email protected]",
        "subject": "You are subscribing to %LISTNAME%",
        "preheader_text": "Pre-header Text",
        "links": {
            "user": "https://:account.api-us1.com/api/3/messages/16/user"
        },
        "id": "16"
    }
}