{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0x3ed0c11c5caed9a46f555c23d16737c329e6ecaaf291ee90effb43eda3e0d170",
    "signature": "0xe819a62355fac2431b98415f2d2d5100f91f0f6eddbc2ac273955ea0f085edcb08da2970b809339b74aa39426189f36a29eb50eaa53f90d1c09ca5bff6b2ce081b",
    "signer": "0x38c65d779554649264FD5A23B412Dd6237e675c2",
    "userId": "839739705"
  }
}