Example
{
"email": {
"optoutreason": null,
"optoutdate": null
},
"post": {
"optoutreason": null,
"optoutdate": null
},
"sms": {
"optoutreason": "optout",
"optoutdate": "2018-03-29T22:23:11.0692722+01:00"
},
"phone": {
"optoutreason": null,
"optoutdate": null
}
}