{
  "manageEntity": {
    "action": "Update",
    "entityId": "45511108",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x64f47ec4e9b4d764f1758672ea4a62fa45bd369eaf02bf2eb79ff638edea6630",
    "signature": "0xa07ee03a497f75aff678b6dbc951136907bb3971eff534b02dbf18b69166c78b590b053e3a9f457eb4d8c54a498530d8365325513950f841244bf8255d48e6941b",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}