{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "386745392",
    "entityType": "User",
    "nonce": "0x8d0d9460eea449860d23831c64d4f289096b67946c2efee6f5e840f9608a1642",
    "signature": "0x4e518910dfd2701eadcbcc7ff2bfc5743bb21cb5d22ae36cc0ef07f420eb1afe06bc3a8efa512bc99d312e39115f9b30881e50e15a9c789aeb3c501cd935fe571b",
    "signer": "0xb2B3D446C5A606ee5B3e74e77EE3c96634De4a27",
    "userId": "399675354"
  }
}