{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd0a07809cd73bb668a335e8ad2b7e6742252cd1321c48381a5cf579a51c93e52",
    "signature": "0x60b27aac080bc1a6449f496407b5b34153db392e0141e2936dd57ee276f579cc4a8dd77325c0d0d2335f811e8381a3b5539570e9531cb0410a39f70f3ea61ea01b",
    "signer": "0xF614cF46A633796cB1596E5A0dFbb50A7C1Cca44",
    "userId": "632228181"
  }
}