{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe7540a5cf29127aaaaf00b80a40302933faf646a8254519e63585cab60fc5096",
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    "signer": "0x8de9F00D30b91ba6fc08575F2d24D49d971AABf9",
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}