{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xe28137390eaf16917b3f1ed8bdff86b66222ad4e4324b9a8da5b8e2a63277c87",
    "signature": "0x13e88f726e2f17eb5588288eb946fc06a23377649a92e9807d84b54e94ab696970a1cfe50be3ca7e0cd6f44758b6b20e641559e1f44543003cc7bb640b64e69b1b",
    "signer": "0x71A8b6263265F31bF93B5519CF3787Fa4A56e96C",
    "userId": "268524960"
  }
}