{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "685704184",
    "entityType": "User",
    "nonce": "0xef6ab1614850e1291b9a380ad9bc4a543f89243d9216add24205c777bfade7c4",
    "signature": "0xfbab1c9e3edecf0b677cf6daf8be43852fd2c9e2395e28f76a19c4c66e32021c7b3b2ac0e0df7eefc4c027c80eb314458cc0b9c2984e9a20715fdeb4e813b90b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}