{
  "manageEntity": {
    "action": "Update",
    "entityId": "116504833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd484133917d9fcb3faad052c1a3ff12aeabb0b1c19089188da50eba5cceda451",
    "signature": "0x76a39d1699fa41e6a8006206e1065e077260fa034c4a7eb177f3a06afe98a54710df049826c2b6338fed436201cab31861d08a5254b6e9352bced1674b20fbac1c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}