{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319458",
    "entityType": "User",
    "nonce": "0x199fc14ef61c639f3424cf3393508633bef501ed0e7fceb6aafc3bcc4cf8b761",
    "signature": "0xe77c2cff7d6255aa5b46e9965769be1dea81aa14f7b89df52e0ce79873e13aed0b3532f6a9effb938f33b2d60426bd9add007897f3ee6389ec09dc89d27911f91b",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}