{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18122",
    "entityType": "User",
    "nonce": "0x656bc7d3cc3e8038f75e6de4c83d21112a16c615040921c8ea1858467ae83148",
    "signature": "0xc90d8e32c6e9d8fa7e370ac8585721d7b353e534f5ca0bbc9bafc440d598b29a216eb4910b552cecc8bc593d6412a0d555ca3122e49eb4af7d7acebf6e5d628b1b",
    "signer": "0xe4BEF9Ad78fC21985aDE48170BE2d4581f937891",
    "userId": "171840207"
  }
}