{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0aa6fc19dbe8350f904e8abf2ed4bbf971fc7ae183387f8f13dde00619ffa289",
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    "signer": "0x68ce3cB584104AD4EB2c93F3A19F0E8222AE6e0c",
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}