{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x478b3cc277ff4969621c2f2ce11492785cd297925e94e5464c3ae5c16cd4aaaa",
    "signature": "0xce2cbc880d63e75b4ffd470c0da4c50b05c68de11f3e267a9623153622390d0f51364de15fad1297bd971537d757363fc0f03b0f1149144f7e2e47691ee2acac1b",
    "signer": "0x8Bd0Fb3FB3c18B08689f1275f54A507aFd71B6b9",
    "userId": "959507505"
  }
}