{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbe5555c361f5c5adb74c370a5dc72cbf2255e648bbcb6c4ada51a59b36d78465",
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    "signer": "0xEd4C0d95dedFe029E3F94b19788dA3ba66F689dD",
    "userId": "528058078"
  }
}