{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355715",
    "entityType": "User",
    "nonce": "0xe4c9b48f46cda971378ee4b12ae72371a04e63d06ff46eedc32db73f815c42cf",
    "signature": "0xa303c7f774f77b295b9a39a60829544c5f441e5bdf78e5588a8ed8dc535555875ff998cc511217ce76323bf918a26273e92f5ed4f0820c14d392e62b3e4bc2c01b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}