{
  "manageEntity": {
    "action": "Save",
    "entityId": "606883035",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa3c7e676b21b5a45bfeb4715ac8eae282463f4590b18c7b5fdf1f29871a2621d",
    "signature": "0x8a1d907b7cd25e9a303c642d13854034955ee1363878e242608cde655d681c3716e4165f958abfec94d70ce20ccd1c594b8fdd025bb65483be74e768f24ec9c31b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}