{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x61571c8977eb3deecbda8826291a7d93b50e54369e1939e6ad016ed383fcaf22",
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    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
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  }
}