{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121647",
    "entityType": "User",
    "nonce": "0x98c54dc6feac5c912116efea91052e14d528ed5c50c8a8de281bde29c87996d2",
    "signature": "0x6214c476ec1e5bbe3cc266ea7f61f084f7447ba3910f7eb18e07bd7385975bdc2c29b78520a94de65081d9aeff63f1afd733f5fad1c460035d6ebdc37ac222391c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}