{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10678",
    "entityType": "User",
    "nonce": "0xa3915c09862d35770b91cdb9cea0045cf1072a79452aa34b1cb1fb38d814d62f",
    "signature": "0x85291e4f1ad690e0252b07aaa93f7f76f6894d7e50ee81438d66447fc12a962460b46455e1811e604676113fc1e37d9aa3b80be28e9d22854ad8e35751b8cffb1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}