{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x470a88a559bde5518af46be17f943a990b252ca9ae46c4ddc5a4c136d95d6992",
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    "signer": "0x3779c0ccEAcffc194b6C8613B9e3c7cAF9E94399",
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  }
}