{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf529b5f306dc751c65d9b5668e2f251d1ff83dabcaf47909d3f156fa28647270",
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    "signer": "0xe9B6cbf0276Ca97F9eE6D53Cd40E8BaaE2a78232",
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  }
}