{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x59836db4065a699390493cbf03cf83b8f9161f6b9a595c8f29d493056f400cde",
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    "signer": "0x7deF33625A39F0c82e548F69aa14Db905C001F9B",
    "userId": "259513372"
  }
}