{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x6c7e1aee8d09ad5ad2ab01167a36c4d026975dc51bcf2a74ac330678f2fedb6f",
    "signature": "0x212850afda4ec9ef64689cfbe7f6adcdc655c99218104231bb5a0a0d07a85863337d3492de5f91f0b7995f73f0865983ee585937d2dfa6bde8ba3649626678ae1b",
    "signer": "0xb788808d4CbaCCc0c39a9F386833260d834567DE",
    "userId": "981621250"
  }
}