{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2dcde5eef937f33a85b498a1051181c665c505d4c366084524ab4793234d7bd3",
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    "userId": "786754079"
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}