{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1821728",
    "entityType": "User",
    "nonce": "0xe95fd7d78e5cc5af1226e2882dba78238bec7690c354d3bdec23eb92c3cd5cf3",
    "signature": "0xf583e21c2789a149f539e326ceb333a1cefd8c5514bcb48a24f1612771bd4c8c6f47fad2c41d10e1bd1f9c160a9aaf5cc1bae0da15f27c0eec9facbe5a5541d11b",
    "signer": "0xe1d49CDcC737a518797dFd4D669EbaAdcED5fe6e",
    "userId": "978436753"
  }
}