{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x20afac44bc8164037c3d2f441461c537e3b7f6d27abbc6276427465f98860935",
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    "signer": "0xA9b07396C6621Ef0A65965bD61de72FdBebf6102",
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}