{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1296b48fbba3d79f199e835abcfcb4be10c094555c3ca9fbe63f214b0ac4c745",
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    "signer": "0xd3cA7B55fFc21a012A4F3fa07C2C8D79aA70edDf",
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  }
}