{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6826af1c6ed1b4ede324346eed7f0d424a1fbd5873cfe951766a71f1e2362ce0",
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    "signer": "0x965a1FD8b47c28Cd2cFa15a4bE67FA79D6c15dAc",
    "userId": "824849283"
  }
}