{
  "manageEntity": {
    "action": "Update",
    "entityId": "576322271",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xda53615d7e6b47632419f1f592cfd89a560b5ac16bb4ac935bfbc99c7055132b",
    "signature": "0x996ccaac9d1eef913b7da5ebd2ad2f70d0f9922b4f74e290a80538eda5fabfcd68aea2af74db290c7ea2af6c3a914c6831a1c27b854b9de017f1c1de37de316c1c",
    "signer": "0xDe0BD424649940F363DdF0AB963aF68Eeb1b243c",
    "userId": "576322271"
  }
}