{
  "manageEntity": {
    "action": "Update",
    "entityId": "540999298",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd30fa889194440d3faa0e92775de382fca4341e4766c96c695cb73bb3eea8cbb",
    "signature": "0x6f1031b86a209832db8db1624ed1942b1e138f5ddd0c8b427d4c7a1a6a4df87b5daa6b5b2ab4b4daebe4f9364bf7354300577752f121c1de9239c77fa55d9a571b",
    "signer": "0x642A2CC27eA0DBf2FDaE8Ac3786C9877e2e40347",
    "userId": "540999298"
  }
}