{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x36bfa520bdd3f4263313e3e3449c7635dd517252e94b7a1fea3b64157000184b",
    "signature": "0x6681b9fe656fca4a52cd9a4bb670a8726d33465289430d4d838394c70a17c522797192906b1c9afd95d56aeb6bb4752c191d1506f0217f6f3d31b0df98bc94831c",
    "signer": "0x16fcCAF720904B30a22E9363032115C7261c823A",
    "userId": "365870080"
  }
}