{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4223ad8c38a8c6535555209660c0f742b93977cb4ff11473fdb50f59ff9d6c9b",
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    "signer": "0xAb91557b191Fc727F6AFcEA165FEaF0bc6fE345F",
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}