{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0xb4a1d101fcf3a33e8c9d9036ec10966074c880cac0a0da320138579439fd4d53",
    "signature": "0x31a4f50f54d6e643054c2f1829b239066925a27f1f0cd41ab970cb145b31c5b21d111015944eb568db9a6a366f82505faa2c05968084e0472f16a0aa6e1a18841c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}