{
  "manageEntity": {
    "action": "Update",
    "entityId": "999536589",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x143e6d50dcd7418a910767fb701774b3fd2afca9b387531cdf6d64deda17ac0f",
    "signature": "0x3f813166480f7488b22e417768a67c74600102bbec1682bc72796c90b8549f0b71b0fbdabb0bf7c03a9329f4dc64404f39f1024e1c283d147c2e6c4e03bf1b371b",
    "signer": "0x6aeCb25B834a4f95Dc6C5113816B2C748b30432f",
    "userId": "999536589"
  }
}