{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe7a359ddec98a5fafb81cb5bedf0f10bbdf0b2516718ab5231866be7be2bc8bb",
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    "signer": "0x75D3CaA74fb1B4204DfEBc70D8A49758Df8325DC",
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  }
}