{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc0291e15b09ab34d92e1234fefe02155ce4f31ab621152c6746891f378c592eb",
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    "signer": "0xA525425e318Cd1b79a7D3Ae17ff37Cd2F20C8CC6",
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}