{
  "manageEntity": {
    "action": "Update",
    "entityId": "116504833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdcf619b14e9e9da2277f5b23d3a493920661baf795fc8240200007b412e52d32",
    "signature": "0x1d8374499bad61823b4aeee21d17c039aaf049a423afab5d6a109d8535116ade3e7643e0a8d61d7693c0863d81be884add7b26688955e5ae584494c8891c6e5c1b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}