{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x0011664c3c81276b613b03e0118289ed1fb2c6ed8f7aebe0cb5bb5b729fb95fa",
    "signature": "0x15b437b21f1c82da70b3f8c02f5d71791a2915cb4ae17387ae5c123c095e5d3d6aa86859b0cdf30c8341300f01fec8699a3bd9080e05e362f71a4c00b4447e951b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}