{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43754840",
    "entityType": "User",
    "nonce": "0x55ee8892b9ce931192bdd2c722799bb4ef76c0948bbeaa40d31e1145998b5611",
    "signature": "0xc81b2d17fd1961457e19c96cb1f9ab7abf624d2369cb28fbe0c2eddbda771a8264a9c553e72f05e439210285ed82ebe512147bebad23f180d122e8a50410a4021b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}