{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x347cef5648428c70ef0cb4dcd8334a7a6ce694acc2d8abf12250eda08f8570f0",
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    "signer": "0x62e802a3Fe4c23eE572ee4C3207d96A63d8bc54e",
    "userId": "384254067"
  }
}