{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x23c78a8381ad8b71fe5611b27774ef576800f4fed837a543e9b977122001a905",
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    "signer": "0x02983e961DC3432C2378361f2AF43F27CC947619",
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  }
}