{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355997",
    "entityType": "User",
    "nonce": "0x15784cfd0bcf42bfeb7d7f21a7ea78209c4884dab84bf329b01510bff78d1661",
    "signature": "0x59983e74f8d7b30edc4b45a76f7c416b6293b93fef539a63d4b855775aaed2fb145e6fc64e05c47262704ba01212d69d5bb2d69e06aa74ddc1a7c8ac82dd23581b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}