{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0x7cd73ac4a7817fd7e447ffe20c1c081eb51038e2a76113d4027590f20c8801de",
    "signature": "0xdccabb350d27052f62416eb4643c7ffcd909bf6661cefe26a60d5f9efe0883c374add11da5f343271a06ad6fa8fe1f7f723c78f6d9eb32c7bdbd7820f625a5ff1b",
    "signer": "0xfEf199273dc1B7112aA0D32cc0DbF797aC6EAfE5",
    "userId": "198179849"
  }
}