{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "288164314",
    "entityType": "User",
    "nonce": "0x22d2ed33d6c873c8b3de42bb46dd1521d0b5b5c610b200dc095f974aa4467d55",
    "signature": "0x64183572a94af34713124397b508c3c4a7b5ee7eee19cc04ad56295e60527ae273c358ce8a67b2ea4cb53537fddc4122906fb056235d5d8fe9dbcf2b2c7ab3e11b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}