{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4f8c96d3448be9e2de1d2befaf273b7c6ffb018e276238051ff584dc97f44b9a",
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    "signer": "0x734240789ab9C452e270f896B5Ad4896c02E76a0",
    "userId": "961881085"
  }
}