{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "615832397",
    "entityType": "User",
    "nonce": "0xae2ddf75bd2172fbba8f537cc38afa76ac74c372e30f038dd768e0fef265e582",
    "signature": "0x46f6b5c56095c0f6ce1c7799cb7adc61ed4eed8fd4473e42a16269b71cddb1b0320a14e3788475f9e1431ff958243bf91a975db278a3c9bf9092bef752e4de4b1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}