{
  "manageEntity": {
    "action": "Update",
    "entityId": "304772297",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe0a0feb6c6f991d545b7b24bfeeabf5ec76f46cd6ea70847d7ed54c29e2cf288",
    "signature": "0x3f83dca6487471700f378aeaeaee052a049b4bd66b5e43067a90307a49f630ec167183c8d27aad2ebf03bc0e8b0ed81f405e878b6f1c1a8c08a989857355f28a1c",
    "signer": "0x39C15699EEEc50BCFB52d4A22F5F54cc5606ffC1",
    "userId": "304772297"
  }
}