{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5423968f17804726f71be5b4e012309c82bc701cd6f3f96edc576dd728d20493",
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    "signer": "0xFaa46B3880Ba37898550cF68DfA837748B6EB313",
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}