{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfdf145cca939d591e1b97529caf7215a35245c10165377f56e81ed091fa10b97",
    "signature": "0xc36cc014b47eabad4f7e24670589c1825c1f5f0986f4cbfe79360535f7bef73d099924b7d3ae5a77164fa3c9a4315e921908417e2724d7e4251f68107cb303071b",
    "signer": "0x71E9d09081F97e64044628F0ad07844068206d34",
    "userId": "37971820"
  }
}