{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbc51e10484853066d0bfd7ad9275e892154d618c860e94b587a1b0f064e14813",
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    "signer": "0xdAe564CB0713a3D034A47afef0ab351208dA6B6a",
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  }
}