{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1683",
    "entityType": "User",
    "nonce": "0x3f86faa282598ac3bf9adabd40b4690dce33f24dffd8aeefc52112a1a1a1905c",
    "signature": "0xa27bdd6c329d367a39d74fffcf936ee705d9a1a12fd7b77741bca75789902d113e05599fad5b0acead62aadeedd568cd186308376f86d31feac7f5bb75d43ce01b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}