{
  "manageEntity": {
    "action": "Save",
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    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa0eca5405b63c691fd1b023f2b0f177c09b9746c24b4fe358cd0082c2c7dd889",
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    "signer": "0x2027077f72cDe67b9d8eDbe020290d8ad0bAd9b4",
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}