{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb4cf69f2e067e500cb7c7e1d4275a30d6063f47b37b27311c9236b397be2480f",
    "signature": "0x6e63f4ca6befebf3f7bc267c4e80c70b2dafd629b432bbab97c70590ab9009324eb2172d054276922650d24e435800a5eb054600c9bf5ee09ed9b6b0bd1382231c",
    "signer": "0x97744BfBBCAe97856baF28EF4369eDA03BFEf5eB",
    "userId": "781311570"
  }
}