{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665",
    "entityType": "User",
    "nonce": "0xc2e8624b8953147d0bc498b12826b172082450ec2e00d5ed6a86ceb0bd7782e9",
    "signature": "0xf1c9d186e7731bbabc29ed29a3a14f1351fb38eed08d8e9ebb2e7ee4e1c63f7d259abc73fff4e889f8c8ac44c2be8aff4223934729dea3129541b0d28840d9d81b",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}