{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5cf67ef3cb5c58ca7eec9605d9ed1a107d01ffb98ea5a4f8697990f74992d5fe",
    "signature": "0x19731cbeca6f9f13bcc052a0b9172eb8947c6aa5743b8d381257c84da0bef9cd0b8e76d97ba2c4fb6277aed1e9de0fd61d15c2a3c1acef5bf65d870366c457ca1b",
    "signer": "0xede5a1527271aFb900714b8Faf61EE0714131C19",
    "userId": "329941643"
  }
}