{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc5312f7cf25efeb7fd81ff85d6932f604530eaa69e6805a02c78bc192fffe669",
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    "signer": "0x14caa07DaAd2C100528BfA1b176eE3bcc67C1249",
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  }
}