{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa9100688fbac41c78b5fdffd8fc43b65399fea13adcec051ee10e00d8d46a774",
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    "signer": "0x8F88e9D514081d9abf16d659B2124E0B0554A722",
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  }
}