{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc2dbcda6c6301ee201f270bbae91f3c48773591a90741e711fe75cd3a940fbce",
    "signature": "0x273edb4261c63db7e557061455d504f8fa7bb148c8e48affe5d2c4b88ff8eee01b8152d3b03d4d14c923639b200e0efcf97b06715169e95aa3ee6e6227d2e02e1c",
    "signer": "0xBabb2974cE779E7D2122EE61C4bEa50Ae3044FC9",
    "userId": "679432507"
  }
}