{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd72e4721da5b971447f9f594a784e6f50688cdeb6d0e014654c700fabca571bb",
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    "signer": "0x48BB6672A6A0e7f39D81A15AAE71cd465a550a15",
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  }
}