{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1a1bdf1655f4b11aa70ed69da1ca569f614333e14b8a11f7f0b87dd6ea5abf35",
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    "signer": "0xa9f9400e53E0081283EDfC6a5d4BAbA3a79a610F",
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}