{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xf1e1252667d590e93e44c10e713c40387625f6d83febb22f648d34f75ba081c2",
    "signature": "0x6a1787363ce06fc698404284bf3bfc13747e5dc7ba51aae9687894d69e4e67af5df57ad58b682e55ec209b2ecdcdcb888ca340ea3af159a4680e51308b705d161c",
    "signer": "0xE22639FD840080b20889373FEa6060B4757eB9c1",
    "userId": "274627911"
  }
}