{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa358a1725a57655d92485da2a554b6e772c92fb93a2211f78a36a225d8287fdc",
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    "signer": "0x2230770EC85946F97685aDECD4b734f51662F050",
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}