{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152300",
    "entityType": "User",
    "nonce": "0xed17acb6d7295ef04d8b8ae2bfdf4296abac3da370b4fda1d73db20e027a03b3",
    "signature": "0xc4698757c87dc106e3a015e8275cb95ebaabe87ee3b15e4a4967191fffa5d30c36548aa9b61d94af34b0e5cb3f70992d46114dceaf9bbdb398daf8658408c82e1b",
    "signer": "0xa6030211678990225Ac0a6a2862549d825e7A039",
    "userId": "543439291"
  }
}