curl --request PUT \
  --url https://api.scholarlysoftware.com/api/v1/profiles/{id}/avatar \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: image/jpeg' \
  --data '"<string>"'

{
  "message": "<string>",
  "avatar": {
    "attached": true,
    "filename": "avatar.jpg",
    "content_type": "image/jpeg",
    "byte_size": 45000
  }
}