{
  "manageEntity": {
    "action": "Update",
    "entityId": "45511108",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf6f1cd0f6e665c8fe4253b2137cd11829279b125d7c5fd2bb5d85f5327de06d2",
    "signature": "0xac6c801041f353df0c40ba36fe3488f07f9ffa49ced04e62ec852de3e0b4b0a41f2d7bd71f1570ccf1f9ec87d9f334fc88b00c0ac1e754f4462adfe3f855ae4a1b",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}