{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd71ebdcf9465835a77066f9c4a536933c7ac2a35f94e9dd0840d10afc123577a",
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    "signer": "0x3a5365a74ef25321130DC828Bc1f9CDc3066D40a",
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}