{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8d0104feca731672ddea2a019fa24fad8c2d992d5a06bf75b60849f7821470f3",
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    "signer": "0x7433EF98d41FA8dAa715B6AAB0F4d3225927B98f",
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}