{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x12b5f9fd6ded658cc37af9730173baead40f4710c9107973f4a9fbc216bd1f0e",
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    "signer": "0x6EB2bD0E0d8Ed336f993b4509F61204D01562a1d",
    "userId": "311009020"
  }
}