{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x88778ea3db479abbdd811c91543bca3bf62a0564dd81499c5997a7a4572e924c",
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    "signer": "0x03Dd69dd20ba5dc4fDF1ed0498D3847c31e64CA3",
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  }
}