{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6ea20b37bcc3445043f912988878c7cbf110a800a5e259bf56ea1066f11445c2",
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    "signer": "0x0e59dC723E2Db3288f2dCA66D897A9960d342b8b",
    "userId": "680088579"
  }
}