{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4a1d6ec45e3ba4adbf6e02b0f2b7c7e80c0ccaeb09eb4eaa834b29992aa326f0",
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    "signer": "0x3Cc890785b74600897A25902Ab88D0246C2C1369",
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  }
}