{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd562623732b9a0a0110f3d9b8d19cc476368c1ebf768134ea23cdd9d984791b2",
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    "signer": "0xA49Ea05Fb50d75D15fFDC8Fd7e1567FAa66E8b3c",
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}