{
  "manageEntity": {
    "action": "Update",
    "entityId": "881446128",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5623087f927f0b9fee8d07d26d4d3e43f26d73a982d19e28abe4212c3ae9e630",
    "signature": "0xc450595955c5d813ba46a16128a3ad92265cf45eb3c842b7aecda3815cb496b259cea1b9c1d0d206547b8c5d9fb280e0d731b2d64fa6291241db474c710e34531c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}