{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1789469",
    "entityType": "User",
    "nonce": "0x5b371fe19cc68826149246fe5601eba3e20e3cb333246efc1ab9f128af828f70",
    "signature": "0x87a62335779405dcc86921882c75d7d948da9e51ac84ba78ad020e72f21ee622114c1882f94779dbaa1f7b7347e87e0dbf943cfa084516095f4ebb65131515841c",
    "signer": "0xb9160bee52F73DAB98D7cB3210d24Be59194CaC4",
    "userId": "319969"
  }
}