{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0xd1d0fd87c4133724d4b56a10e409c9507164501dc7ac49ef5ac0bcfc38c27ebf",
    "signature": "0xfb138af0a9eac721f7b063f06eabaa09a0bb59c1050643223bc8038c9bb0cf6249db2fd40dd5b751e66a9524fea2603d36b50d5ec2db53125d3356d7e39f05711b",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}