{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x91ea22eddf42b450d5db289c949a15e7f4d27ff9c9cdefa1d5cce42d70397c67",
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    "signer": "0xa5b9d7881cf302eBf6c02EA48515280652580202",
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}