{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "406225571",
    "entityType": "User",
    "nonce": "0x10b4eecfeb488ae5703dc4e42bbb63fa0f74bc43a20a4db8155f7fd2b4c85bd7",
    "signature": "0x2e6bbc2d6149a044a1b857051f24d38749a4131d81337890a5a8456e96c2e8486214ca59b1506b4f71600591b0ff741c5f0413d9c2967d0db7a98551375d85fd1b",
    "signer": "0xa3C91a44f620f0b95468bEC359f89edb95AE3cdC",
    "userId": "904405512"
  }
}