{
  "manageEntity": {
    "action": "Update",
    "entityId": "902447162",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfffbeef6fc8d8410d3509368270b04f51ebb9e09cc60e3e4b438646f4f1f1e6b",
    "signature": "0xd6f97bcc6c54e09254304a5afb355073d778a98e2eea2531b37a477402f292370d8597f97337225d11d2e698dc4e2cb733d5f5f5b452e4a7631295050e0997451b",
    "signer": "0x9A26C000dddBb35de70F49BeFD5Eb0e9501Bcb5d",
    "userId": "902447162"
  }
}