{
  "manageEntity": {
    "action": "Save",
    "entityId": "37356",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb5ff907ac7aa2a16ce869c97cd33bffe71f724f189a07aada67f41c7718719f4",
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    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}