{
  "manageEntity": {
    "action": "Update",
    "entityId": "129329734",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraza4i6jbjnbkalahpvsck2wsheygwrmmx4qh5bijp3quiu4b6jmka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1746416672}]}}}",
    "nonce": "0x5138b4930464c380bd2e8d1e9826f9bfc068ed98b2b15b0979f3d8667a23584c",
    "signature": "0x35329ba8ed3fc1c5ea23249af75ab11f828f68cdb2d769c2c287953308ab6c8176555ea80067fed76ddde7e3343198ff5cd812f84d8f1adb3c45e939b90aaa061c",
    "signer": "0x88602394b9baf0757a2CbE35FC3fBdb9E75b6DEb",
    "userId": "129329734"
  }
}