{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "877849833",
    "entityType": "User",
    "nonce": "0x036e015fb6b19b074a87fc942289c0511c20055753c3d81e10058a7f97d4d149",
    "signature": "0x04c1002b883e62d4a93602acaedba4ddd2c8705eeaf0eb593d20a65d80f4bb50791446bfbbbd29c3071bd509f358f24810aa37421a80797e87aee868641b8b201b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}