{
  "manageEntity": {
    "action": "Update",
    "entityId": "8733209",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe6a3632953a7481e1a83f2b1bb4772557cb68b720078e3ae8396314224fe534e",
    "signature": "0xb7b8a9a9ff888159e77ea460b7e51e92e1222a2f97d5892bde2611cb447201883b2ddfa915087344c40abe0d4b23b571ade786eeb108eaaf66f8a587562505fb1c",
    "signer": "0x1cBD5D683221775A4DEAdBDF6D31123B76c14993",
    "userId": "8733209"
  }
}