{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9b7fc38fa656d4c178bf9f8d4636b87478f6ff63b732133de3beb6066ff6c252",
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    "signer": "0xcFFbcec789772e42e8Fcaf9fC75B76Ee23C3B987",
    "userId": "706820462"
  }
}