Generic 500 error when attempting to modify email addresses for Clio Contact through API (v4)

I'm trying to add an unique email address to an existing Clio Contact through v4 of the REST API and am receiving generic Rails' 500 errors. An example of what I'm trying to do can be illustrated with the following cURL command:

curl -H "Authorization: Bearer << valid access token >>" -H "Content-Type: application/json" -d '{
  "fields": "id,etag,name,first_name,last_name,type,created_at,updated_at,clio_connect_email,prefix,title,initials,primary_email_address,primary_phone_number,email_addresses{id,etag,address,name,default_email},phone_numbers{id,etag,number,name,default_number},addresses{id,etag,street,city,province,postal_code,country,name}",
  "data": {
    "first_name": "Wilma",
    "last_name": "Client",
    "type": "Person",
    "email_addresses": [
        "name": "Other",
        "address": "",
        "default_email": false
}' -X PUT<< contact ID >>

When I use this approach towards modifying a contact's phone numbers (a similar concept), my requests work.

What am I doing wrong?

Please assume << valid access token >> represents a valid OAuth2 access token and << contact ID >> is a valid contact ID.