{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7e40f694955374d49baa1b1966704fbdae209d7d27952294f6ebd6d1abc8e619",
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    "signer": "0xbcc1c37Dfd19ee2B8ed143ebE449e5c756163B4B",
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  }
}