{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x08e4c5ff880bbf19e429fc933d604bde3965f8be37dfc626a7ebcdc490691c01",
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    "signer": "0x4Ad80B5AE9a919a8794fFB27511cC7171BE68f74",
    "userId": "245565231"
  }
}