{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x55e0f051a8400fdfc95d1d9b633ae16d5e08dacbd854d280e310ee0c70788a89",
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    "signer": "0x71fd4247cC62CF33c87fbE6c68262092C0B71802",
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}