{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5c54a8bd74285f52f0c3176056348d96f94b172a15bfbca7d8d40883f62160c3",
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    "signer": "0xdbb5FeAE65617ed3C8616A66B1152898647cb83F",
    "userId": "936213876"
  }
}