{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77901",
    "entityType": "User",
    "nonce": "0xee1e219563769d75757e4238f090536e6b1603157ee9b594a19c5556233cf474",
    "signature": "0x2116ca5c7155104d591547d56090a2575efdc9fda367c2217d7efce9b774ef7379382c8450304d70bb4325c7106664b7cb358250cf0053e71f11c17489e715971b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}