{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102143",
    "entityType": "User",
    "nonce": "0x4fac06b9eb0302a70a39c65ee9dc1f621150bc808f11dad7bc0b9939f28667b8",
    "signature": "0xe2900a4b3713ac9f2e2f609e46edbdc107836192a9678cd80801b0f89c85db1a1ebb2624d671527fb1adb3c413ef7d881642bff0c7335d8813bd07dd36722dea1c",
    "signer": "0xb2B3D446C5A606ee5B3e74e77EE3c96634De4a27",
    "userId": "399675354"
  }
}