{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xfa49d3b9b06f8685eb708df6fe74a5c7284f3fa2c89b5189aeb8771ce9bc2d8d",
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    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
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  }
}