{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc00cfc54d3cc02746284ade35c40f25bbfd83d25dc0c85c580cbc53085a394d1",
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    "signer": "0x766c41F0daaFcB26dddba29065176838edD335AD",
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}