{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4498",
    "entityType": "User",
    "nonce": "0x61c5319534ecf1679b6524f746346bd1ca479a300509aef20643ba39d8b0af36",
    "signature": "0x5f26e0139ad80b20f01ca211ed14337860f27cd1ed51647c0fd0b8667ea852090a3d89a3efe75312240bbdaaf517ad9f9057c498dcb4e8807d37c3a70cf8a4fc1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}