{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1dcc22ed868f504de3de47977f93eb22d7de35a04eb0426478085229e8b87d33",
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    "signer": "0x797AAe2eb1EF49cf13fc6664A43142fA5bD235Ab",
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  }
}