{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2d54ff0ceb652e8728e70fb10fd72d79389bf07e834397c53e32a64fb081e3a7",
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    "signer": "0x724E540c9d3ed303Ef6F39F2C1F872Bffb05EE67",
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}