{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545105885",
    "entityType": "User",
    "nonce": "0x1a38920fd78127b2c18d6cb2339c3db6f91f8a6d234a617a81f4b4794f865afe",
    "signature": "0x41695bf80baa208395867d0e0582d5862454aaa40026dd39a590a61edad96ebc2e41bd3c7d43102c2ebf73f556b6278e326c7bdbaf5eee251ff0786a0f11c34b1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}