{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4cdb9f05151bfc4ebc5050ac3a044cacc409c7204f5cca00b690049178f9d057",
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    "signer": "0x6acb8e6103781063ff1a8cEE612F7c3373737bc4",
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  }
}