{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xde4caa6520c6c6120c528785fce0195135a487b16761643cb6c01a5e5b6d391e",
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    "signer": "0x18106D70588e25d7Fbb05b7f449629f6fDEbC7F4",
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  }
}