{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "962634039",
    "entityType": "User",
    "nonce": "0x4c9c2e6f1e95f7cf7f6d821c2c807da3dc76b032ad136a1f88db734be7d6e6b1",
    "signature": "0xb2231ec83da094f09956097c0e65c0e083c2bb943f10c92d869f21c6a79cf5d2728188d8a9e1f3e8c494ad2826fee2747bedd4bcd2c41174c5a90fc48fcf146d1c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}