{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143598438",
    "entityType": "User",
    "nonce": "0x7b5cdf3c6f0ca5b53d2be78e92428a4e2c6d1fc1575136eeaa2b8588ac75f67b",
    "signature": "0x5c4bf41655513520da33d76038426ead6782d378918e773e86fc9298f292c1b07d81db2dac51acfe6e9bb183ed09478566489056e7aed3b1152fedceb873685b1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}