{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "897648338",
    "entityType": "User",
    "nonce": "0x106da3fd804601cbbe0d34523e4bbfb20ee2e81976639f1feff852e63a2a5cca",
    "signature": "0x888f7fa57c0a66b45b97abaec3c60783d4611ee0f722490068655088e53d7de71d570c48210028dcbc42d8e08d9e1d7aa567c19402f3fdf9bd7c139d12cbab8c1c",
    "signer": "0xd9d4cF91e1f5AA6f2F8599662a7c9b5896FB2a2C",
    "userId": "289632107"
  }
}