{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x62b8c69c492c06a1f60b8001de95b1468fe10ccff04830c3997b2de0fefdaf7c",
    "signature": "0x3d7ff659a7ad6aa86e879173d43fd781abae7b8820158d98241028be4f3b54ef392539e021d827b730248113ac0704c2ae5d148d4821a9d12c0adb18184df5df1b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}