{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x7ae6b3d01beb06a88512a55219d2e4a3b175bafca0d4df68ea7fc094abcdea71",
    "signature": "0xf8778ef559d106c6efea79765edf728ecf75e4b822ff9de0b8a495624349755e47f815f27483b65e58b9600131044b9f7fb8fa0e43a82d7c14d0128f67943ba91c",
    "signer": "0x85fe520C572b5a325f70877387fDD616c9Fb8bA6",
    "userId": "830423041"
  }
}