{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6b46b901e3ffca7a8cd635acb6d00e217056c67534949fc591a24abdc5f5789c",
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    "signer": "0x700cFE4b4B69AcB84316e2C7e5fA138614A25D92",
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  }
}