{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1e35b398b3d329b8bd0488f0589fec677df11155acb3aff68a5c13c5078942d4",
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    "signer": "0x3bDd57f19A84B53BbAbB60892038153cD50Fd5B9",
    "userId": "859997783"
  }
}