{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334323",
    "entityType": "User",
    "nonce": "0xdd4f07043a03e1e8c7f82d880d945e56d73a4e4c1a6a44838839519d4c8a92e1",
    "signature": "0xd3cee8b41c90bb59867a150776984159f0a630b896f01228248d003c37c03fc65df950e463e03ee9d1362201830fa354de4ccadcbc7484d9be2b6cdf52a7c26d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}