{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x57a9f388465a242cdc42f601b1d607120ace5e5dae799c3dd23ee87346cba5e2",
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    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
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}