{
  "manageEntity": {
    "action": "Save",
    "entityId": "16272",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xce375df1042289fce32d87a7675fd3d03230788f4b0b0cb438418f43660317f1",
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    "signer": "0x8A2eb611ED13B7Bc9CED13f52F7e15b1055eA0EC",
    "userId": "472472299"
  }
}