{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa08f9cdfce306a19536fe33ee147d55308032ff3f1aa0b16513ac74aaade7de1",
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    "signer": "0x553f6162aF0fb3DCa208FC317867b5a4930EFedb",
    "userId": "781219675"
  }
}