{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x28962222722b20a267a608d890ca0261a3fd2f4b633becfdf6ef447ed24eedeb",
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    "signer": "0x805e3B28706cFafd53ee09855e9EC6251eFF1732",
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}