{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x325347e57a33c03e10f8f8ee3ace230bd5f211e44fe9803a0c8621bfee950167",
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    "signer": "0x34b7cBBF33C5C0D4a244B389DA0329CF81314463",
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}