{
  "manageEntity": {
    "action": "Update",
    "entityId": "194963084",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9323a5c485c116d89d175635ce2061abfb756618a15ef92921c03120f9ea8ec9",
    "signature": "0xe363ad47777c89731b938e8c3a00fd3ffbfd22f3294cc444ba18d89cb609c124690db9a41efff048cae827308059d326c9209e757f1a12930e97acc80297458f1b",
    "signer": "0x52C54744FeC93B156A460Db7FccF10e22b6FEdf0",
    "userId": "194963084"
  }
}