{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd3c50b87419d74b270271e6bfa2269c396131f31e19a98d602add6e420aeff56",
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    "signer": "0x2d59Adefe6aFAfF9c7F790369152515Cc2BC5510",
    "userId": "388606933"
  }
}