{
  "manageEntity": {
    "action": "Update",
    "entityId": "135085700",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x637a843897c94cd776e102118053fd40af181acde03233e67bfd4fe9edbd9102",
    "signature": "0x106ef1340113e35c464e24960dc03d00e43632594ce4ee28d2599e57f366042d7363a311456ecf544de8dfa4f9adddff83e8045fb36c375c49eb340ef8d7c8901b",
    "signer": "0x52D9e36016EEaFD98466652F88bE3b7C97D4b408",
    "userId": "135085700"
  }
}