{
  "manageEntity": {
    "action": "Update",
    "entityId": "172398120",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfeebbba7bad90d534c91e9ad2cc86b0a90fa10f7ec15dd2a2099fa0b1e2f5749",
    "signature": "0xc6ca006d345fd54ee72e2f54f8e95aa493e4cac82c16200975514e73b1b917be464d14e8d133d3ff44b79980f18962a0a05b979b992291efb088d5ab7587cf4b1c",
    "signer": "0x09CD5801E4DE8958d8d5976C98AEd9219260261a",
    "userId": "172398120"
  }
}