curl --request PUT \
  --url https://api.juicer.io/v1/users/{user_id}/feeds/{feed_id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": 123,
    "email": "jsmith@example.com",
    "invitation_accepted": true,
    "invitation_pending": true,
    "feed_ids": [
      123
    ],
    "created_at": "2023-11-07T05:31:56Z"
  }
}