{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737872723",
    "entityType": "User",
    "nonce": "0xca6ab2ad2d050cfd1698e6434b69bd3e430227cfc803d50512fadbbd0d1aba88",
    "signature": "0xa8dc46272e39936218e30a0a624ed02d68ebc0eec6c03db64169e81571dbb43151113976cd808d46890773a3908f47e2ed2ae32dde213a027f97095b9ba1b6e61b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}