{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1aec6d89176732ca7f7921e9c8b8cb495727b08cbad518fdec136549345a9295",
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    "signer": "0xE67be183bBF2A23e544175b99f85FfCeA89a5164",
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}