{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737872723",
    "entityType": "User",
    "nonce": "0xe3633f9fd42736d256a6fb2ebc1e5d84b3e8393453bbd85916494ad08307aada",
    "signature": "0xa044c734e60d98d984371a04cf44fb65c6ea3e883581674cbf59d09f96a93b934b4c6d49268afc17a70a7a3a4d20c1789e77176d64377ab300bf1fe2c0a8acf61c",
    "signer": "0xb175867C02AeCd449963dcdf49E8710D84e56b11",
    "userId": "181053434"
  }
}