{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "908266604",
    "entityType": "User",
    "nonce": "0x8b5ec4994c81e8cb5239d39d1012b3d4f5a54d3b693eaf4c4ce0725d02f83814",
    "signature": "0x4e5dacd389816cf26b2a781bb2fa10293d89b04512fcfdf17e1ab0597fa5fd00142159788f1995a2669b6ad672ee57addb0b664edc98ba46d403d874ce1773541c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}