{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638733607",
    "entityType": "User",
    "nonce": "0x9aac4f0278b150870af05a316989658f7e666fe0ef7c9ee535b49aa5c90a9a23",
    "signature": "0x8a62b604ff4b166b3bd0358469a3df016742f05f42534e307eaf084fa1457e992b7dda896cbdf9fb5a5c24d9012363fb759dac38c08ce5073ddb6cc7f6dd781e1b",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}