{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "346345309",
    "entityType": "User",
    "nonce": "0x5ec0dc6e07de91893b750e80826108213bad02c4975356d3635d59f3c5a3c529",
    "signature": "0x15466dc493a915b195fc46b3988fd3cfffd54453f367281a9e2aba84eae69bb72c7a437f354a22801f0639ae981cdda43a5e077acfa764b99231ac31da7aaf831b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}