{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbcc4aa738a14fa94a20f6ee91c74f437b32fcb26c4e8c637388e2d81311ef887",
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    "signer": "0xd01CfcE90f604Bb8eF162c3d6ffcF67781de47bD",
    "userId": "36089100"
  }
}