{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4138",
    "entityType": "User",
    "nonce": "0xdbc9c1c58a96a48a00d6a0e002493792ca85a472536288327930c0a09d638d4b",
    "signature": "0x1ba2d06b38111411a60d9c461f9efe4185295aa7ee11dc266c83626de1a895024e721cc608841dd0d6135a62c9cce1e8aeed21902747d6919db3610d98461d5f1c",
    "signer": "0x3ce98eEb540e9f90ae2BB6588CEc86ABa4099408",
    "userId": "8601343"
  }
}