{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x33d4a573fc8b514724c350f09594a48056e3e08689b0c87bb388b7311323d70b",
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    "signer": "0x715cFFF87b8c59a96a0Ac120C6865d50486dB9F9",
    "userId": "706102855"
  }
}