{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1894938",
    "entityType": "User",
    "nonce": "0x23cd021631fc206b70a78a8c4c1a0f3c260f2377da09b242d9be87a239884c96",
    "signature": "0x181e0b2f88b75c07fdabb7fc2e378f30c7b28cbb2f6336348cdb325bb5b97cc74918968f4fb6485a20bcd09abb290003fb6fbca4d51e4242bffd4f8fe8e509801b",
    "signer": "0xF9B644bb5d7485898881C9e02e17ba2A635ed179",
    "userId": "866715888"
  }
}