{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x9db9a6e0cdf397338945d64d75a801fe039900b3616eacae4977e5f1d9a5ff41",
    "signature": "0x4fa7e933ba879d5f0387360b8306f17ad64bb8bc6ef69984b0a6d5807ab9669067fef9f78cd9cf13334882ccb22666f65812693b014e399690fcb3a7f97e84841c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}