{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1719649",
    "entityType": "User",
    "nonce": "0x1402492b8988ea38d28bd4fb221cfa5ea790eb47d0cc77923fa0cb382ce4719c",
    "signature": "0x7b0e35b63c74a8ca1520e1a5826d6c34510a1f9b52356f5e25d2afd61ee25ad504a7b5ced800cff5eafb5a687f6a80739c5ba1f75b1d833478900ac8ed8464551b",
    "signer": "0xE6e03002B9C5eE8351ACADA56815831d91339c9a",
    "userId": "625610029"
  }
}