{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa607be4ebb1d0eaf8361f946d87f2be43eb3c167a1e941728de2fcefc85b3925",
    "signature": "0xc61c9ec2b75597425fa766204947558034011844f9bd51550c78f5f87dcf360140b3e20fe11195c0a642e7ad40053e14528760ce111504adc82bebf97a5f95291b",
    "signer": "0xAaC345b281936C4DbF475199566cD620F4e69920",
    "userId": "64989989"
  }
}