{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122753",
    "entityType": "User",
    "nonce": "0x8738bf838a82978ba92a28824ad3467f0ff5051abb66dd1e63ae2249810b49e0",
    "signature": "0xed4c6827ae621390edaced0226c888bed7cd50342441babf116a51f43b4b8db662c48fc6e64392481e2a57eb41012e14953435affc213929ac2f7935a4c7bfa61b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}