{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0a1298333e451fd8b7c0b4136efeebf075f88c084261f1dc0c59d98281c7fd65",
    "signature": "0x6bc1aaec93cc80383ae066ceeb6a8c7f66a23a1b35550de1406652d3ff51e3352eeaf9d0e72bb1534b2ffab011acc5a30b51e756b52b8170cfe2278916aa0ccf1c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}