{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc8cdaa6278919e6f93afaec2dac63063560ed5953c68986bdee575a2fe66293e",
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    "signer": "0x0da3CC736cA27054727cc403563EFCD291BA266D",
    "userId": "888690426"
  }
}