{
  "manageEntity": {
    "action": "Update",
    "entityId": "153215616",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb308496cf102d195cefef56083b9b7aa3566ce63398a799bfdc8720ae7983d42",
    "signature": "0xec64bb035e8ee4af554be92a41697882943bd970408974aadd6b7ed1ba94ad980c6347ddf8b6081a3bb30e172daa7d8390772db4c274f8b9f8b321074520a3381b",
    "signer": "0x23Ba22AD3B91EdadE1Fb5ab3727E3926E8c489bC",
    "userId": "153215616"
  }
}