{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf2c4791214adaba9639289e096ca4b0d7cb54e827d5adec1c6ddb697ae699b96",
    "signature": "0xe777c817bb5e3627d50ba5ee1237a7496d6e25d39f1f772eeb629f4abf22b7705b18b9e8dc114aaf36f632cc50099b484cd1137710dca02dcfe9faa1893796331c",
    "signer": "0x4Db14586d7D93a59b9ea53c554bE1687faEAcb02",
    "userId": "814144312"
  }
}