{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0x4345398eba9ba98f7fbf10d13fe34a282a7f784e0d5a069a05d340bbe7f9d82a",
    "signature": "0x1dacbf51825366b61097780c4080ec44102a990bf0ef1e30f73d6bb12b4b8e4a04d13c7b49e2ed2615031ba351c3278a586d51e9e58330d346bb6a77cdde90931b",
    "signer": "0x38c65d779554649264FD5A23B412Dd6237e675c2",
    "userId": "839739705"
  }
}