{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "394450",
    "entityType": "User",
    "nonce": "0xac57ccb24c4fee5adc813bc1a353a4cd5c1093f68c0e59249a86ca690a96b963",
    "signature": "0xe8d6b65883bf47d8e6b93458a7942360442783659c8596389aab4c5c0421bb691df61a5b4613e51b27b637a91756295f547681f7ce5af7c7b82b6b756a6cff781b",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}