{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x5048ec9a9b89c5f53d77e7339f77ef845ace3d98c8ee5f50e7eb217d634e4ab0",
    "signature": "0xe761c2c580a51394cbeb76f7b154bdd8adb90a665db6127df90a71426bd186674d41a8b91d5a35660ff1da8bf871e53a7f1bee5bf4062c6cbadabf61f12955ba1b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}