{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x374df404aa4dee433ee7a0dd6436cf785af28cafc7ea7da2144626e62966e697",
    "signature": "0xe38ecfee62199c14ce5cac2d56e61f372dcc210306d17ae2d9cf33541385be965424fb87ff0dc32d59ef3b0b0bafd503626798b3efcec1a78cef958b50ffe4191b",
    "signer": "0x355325e20819Ca56f2C729fEb6E34FA039625A24",
    "userId": "39191"
  }
}