{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "883812378",
    "entityType": "User",
    "nonce": "0xabd5188ba2564198cba2ab40091eb34b885ceadc5ff577a0b5bb6b4e91456d7a",
    "signature": "0x4c5f337b18a58718cfb9bf610fba8af30063c230443ae92d0d9302223c08b42f5794f69ed17e8fbbcccb2b9f69fea17ee7eb4d3b846f5e6667889569bf1bc59c1c",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}