{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "975218829",
    "entityType": "User",
    "nonce": "0xa0a2acb45c3454d2c80e62936d8fdff2392f89bde001a4aba450f4ae6399bab4",
    "signature": "0xd15777410652ed7aa0569a672b8f1a9c2112c74952caaeba651e9aae761de97c6d6da00899831d735d025d25591d896c18da0d37264a909f9e21ccab476bb5fe1c",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}