{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "409129",
    "entityType": "User",
    "nonce": "0xb45f37c0327e644486683a0897915f3667f5727a29a26ed44c46eb59c3ffb7df",
    "signature": "0x64bf0155e8a30b73b62aa3bbb644cfa2bf98224c0bb92d9c9ac5b74d4a05e5ee12301322e8c3edfd4711434b0965b605a86ba3e24d066c9b0de9c47f1f0ed1e11c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}