{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa65e909594c7e384d8c261696aa8c54a47db974f38b971f90fcd09558481d024",
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    "signer": "0xaa8Ab6aeD27BF1caFe5177dB3A5f057376f82dFD",
    "userId": "818723170"
  }
}