{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212611",
    "entityType": "User",
    "nonce": "0x422fb08d4cf8e094991eb9772ab5b0eb849264a2a5740f73bccda199ae852754",
    "signature": "0x7d23a07061fd4214955233d678fb301f93987d3e2e6cf89bdbeff8f4feffa0d026c811d6b897138a60971da0aae9915e60a3332938222a9bb6af449c74999f7b1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}