{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2954e043d44f657366df71c9ba83a34cf03f1c5e81479ca03b2a3f3032c31ea1",
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    "signer": "0xaE8f01E1365fF40Fc050967a35634F857650c83f",
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  }
}