{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "27388",
    "entityType": "User",
    "nonce": "0x3ba8873ac5f5f67be174a4e6899994132be19d41735858c0ebd63adc105429a1",
    "signature": "0x05fce9d4f1f7d5453b685885520c1db28ce70a1350d212f6aaa623dea17c29700ee209695afdacd4414eaaec3c4550694ba42455239d0e77d2220982a8155f691c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}