{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "344086",
    "entityType": "User",
    "nonce": "0x62ac98c8c4df420833174052da026b216c6499b34f777af32cf9db2320a2c724",
    "signature": "0x42cd67d71ce909fc7e979cc05f4719b413bc8ad13561304ff4d5fdd5fdbfa23816100eb74691d040377fa250868edf7605a88d7df31abe910831181d3294511a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}