{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdb5584fc39b302971c6c834c9abe09f4049debc4bd566b8c3fa9395364f181da",
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    "signer": "0x930AaCc168c71FC3e0De7B5e09D45A9FEe2A231A",
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  }
}