{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x203a4caf38d9b202244b438b9de207293e954a03516ccffc8a61ca8873589a01",
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    "signer": "0x2844C82020Ab80Aaa1a405d0eFf19e41694978Ec",
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  }
}