{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x0293b78076e10d12bb866e387b6ea14af5f3ddf75b058718946c85cb8bd23fa8",
    "signature": "0x98c3bfccb9297d6e9d9a706f2b857fb9c6489843653b85a8fe173ed8c9a0fff46231fbb69a78c5c094d00d1f922ebdcb66d974edd9145c67f60e20cd1995402e1c",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}