Hello,
We created a custom attribute with the list type called `Channel Networks`. When we try to update it via the API we get back the following error:
```
{
type: 'error.list',
request_id: 'REDACTED',
errors: [
{
code: 'nested_custom_attributes',
message: 'Cannot submit an array as a custom attribute value'
}
]
}
```
Other custom attributes work fine, just list/array type ones fail.
```
const respIntercom = await fetch(
`https://api.intercom.io/contacts/${contact_id}`,
{
method: 'PUT',
headers: {
'Content-Type': 'application/json',
'Intercom-Version': '2.12',
Authorization: `Bearer ${process.env.INTERCOM_ACCESS_TOKEN}`
},
body: JSON.stringify({
"name": userData.user.name + " TEST",
"phone": userData.user.phone,
"last_seen_at": userData.user.last_online,
"signed_up_at": userData.user.created_at,
"custom_attributes": {
"ACME": userData.user.acme,
"Channel Networks": ["Channel 1", "Channel 2"],
}
})
}
);
```
