{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "713989536",
    "entityType": "User",
    "nonce": "0x4ca820343be2c1b0de82076e6250ecf6d17ce210db0015c77c45ad6897ceab44",
    "signature": "0x61ae06ddb636a6b78a8af437cb956d9864ac5641cf197b52f08cd052d8a8351303ab71601acaf9e10ea55e264032944f7afe1fb7dab9ca5dcb842803cb289cf51c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}