{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "219239808",
    "entityType": "User",
    "nonce": "0x0a8b0873e3cc76c4a0a2a2cccc4bfb8205a818f465ec91c4cb1e133b391ed5db",
    "signature": "0xf7e0e5e8f41a3034268c45f2ca1bbd1745af3480acead4717936ce2b0352538373fd581354976a70db28a2c73dcede69b637bb222f44032771a09387841c9dce1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}