curl --request PUT \
  --url https://api.mudstack.com/users/avatar \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data'

{
  "id": "<string>",
  "auth0UserID": "<string>",
  "username": "<string>",
  "email": "<string>",
  "firstName": "<string>",
  "lastName": "<string>",
  "avatar_file_id": "<string>",
  "defaultAvatar": 123,
  "industry": "<string>",
  "occupation": "<string>",
  "company": "<string>",
  "emailVerified": true,
  "isActive": true,
  "city": "<string>",
  "state": "<string>",
  "country": "<string>",
  "zipCode": "<string>",
  "invited_by_user": {}
}