{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x34e4998a0dec400824ab00befaf85317f9d2d4e5f45777ce83579d983cc1768a",
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    "signer": "0x81e9de9D1365F9c0cdeb3578Eff3bfC3122088d0",
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  }
}