{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x7846a620e5a85181f0f62c71c6ae16fe7b3a587722d054c74564d622bd78a77b",
    "signature": "0xf3c4a726ec32f89af23005cc56e4df48282ffa373ddec5b4d183fc8fdfdc553d1d4e7c74c518ee99b6271ecbb4cd003f74b7964716995a1bd1f952328072d04d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}