{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x42c3eba462142278efda68cfc7b57ab6b41baf13c6eb3ec0603f709ed5b5bfcc",
    "signature": "0x735acd494b0bbfb7b2e3385ae460693eeb332ce4b3f48290ef04c2e7575bc17b367e82ed1aca7bd910d9ee170f4547adc164596b408d97380c006eee4b6acfad1b",
    "signer": "0x0C73Cb0314281db439083e5ae4b1443Ac537a76b",
    "userId": "346579799"
  }
}