{
  "manageEntity": {
    "action": "Update",
    "entityId": "159488853",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x168374f2ed2da3b1bffbb5dfb755d5abbec1629d2a08287f300ea83606ee38db",
    "signature": "0x0db7f84e2994add88e2a008b0bdb20b8dd649c4379e71ae05a6652c4b8ced04e70086b18e57d216fb71ccd6c9162287b77578ebf1bcecae230f05722f57d832a1b",
    "signer": "0x3Cf3C89FE8F0fa5C671377B145Cd7d5e83fa0257",
    "userId": "159488853"
  }
}