{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xd3902277ca97ed4896352712ec1fbcc54161c66b126369c5b05bb598d2b51111",
    "signature": "0x73a55175190843a2ec8e629a3cf6bc6bdd6e4fbbb74138ca20a1bbd8e3d48fec62690c2b6fd85ed16b156eaa8d4306bdb574b51207a3f1e91d696eff08b9136d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}