{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x63b2ac4ee6b729b5bae410183b32510cc26c441a068aaf1ef84f6fa84b903cf3",
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    "signer": "0x2fe974Fa703E3bD5c3Ee3410C492fF0324F1F84e",
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  }
}