{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21930",
    "entityType": "User",
    "nonce": "0xafb982164bee92316b71ca0870e98efdd52d601003e443ff594e146bebc51c1c",
    "signature": "0x9c4b3a719e251995b3f2568f4ceaf836731d8f3cd67cced479fe3c9296d3f8a90cee21c338ae162fbd15889c81d0b596865519fb9f3417c6cc4e8e3d495cbd551b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}