{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x867a9495e61d6d326f7ac176f3999e20021a12a1429a6434dbee5e2bc789af1a",
    "signature": "0x2c2753ca7d4871b6c88235517b2b9d20a4e35bcda5e153f819b4dd7bd17f0ad633290c733f9d69e2c1573b83c6c01a346c44819cefab63ba6e8486f5965cfed01b",
    "signer": "0x88d7917d2b0b9cEAc31406fCB20e2A2809c6BcC8",
    "userId": "953805481"
  }
}