{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa8170f6b79a769438f63ba65f77e531e030fcd11c1cb4f6f1a04b28456aa23d1",
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    "signer": "0x97CE54f824356168619DB7187EdA973c1110bDa7",
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  }
}