{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0xa4320c527fa4fad64750caf11a2094e7a1cb4cd39545ee69ca9391a9067aa471",
    "signature": "0x781bc5e59875394d48e7c6196df246c786931e6e0eff3dabcad7fd37bf01128111c0952cf191b2b6f73fefb67c50a63428441bddd3de89da85a5b979bf4487941c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}