{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x902688fb0840503104c1122a62e652e3e80d6989bcb913797d0753bad1cc106b",
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    "signer": "0x62a1316444ce6d55D51fd4Ebe5e68bBD02AE5320",
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}