{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x40c2a9071e171481cd2101832d5c733bad9502fc20c040e0b0718c1cb07dc882",
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    "signer": "0x7Cd25769399a3c0928125396a2Bc231a2Ef98f8e",
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  }
}