{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681230276",
    "entityType": "User",
    "nonce": "0x4a1f1774cd2c529a3bafadd48e918586e802f4057ca4a1fca88e9c50e947d286",
    "signature": "0x06ca2b5ae3326d78c7e0c63689ed7225d26e40cd22b8625fa4c9c28e80f1c3881126a61308eb49ad611bd79253214c8ea6a08c19ced0a2cf597ec6cc98535c771b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}