{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x721dcc29a17cf9a96e6f8631cd35827a22a7bc7e5611a537dccadc2bded5367d",
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    "signer": "0x28fC8B4966Ce6368CED67496DaeF648ddE50bC1F",
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}