{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "696716320",
    "entityType": "User",
    "nonce": "0xac1978ddbeb7c3706935507638417dd1f1a2266feef792c8bd84c5ddec60c57b",
    "signature": "0x647f8b61bfc1d3a5abd07a0c139abd13f5f6c60ac75d6c9f2f8b3356e3bfe3f63ba4f9898b7a8d8ef61fa0e9d32486bf74e9f40123add91b7bd018f67c61b4901b",
    "signer": "0xa3C91a44f620f0b95468bEC359f89edb95AE3cdC",
    "userId": "904405512"
  }
}