{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55447",
    "entityType": "User",
    "nonce": "0xe81f1c477163a88d8153d310941d7285bf02ccdc3dea9e2342ee95c6d469ba30",
    "signature": "0x969096922dae2cba0c45eba630e3df26ba4525e641efb6daf5fbc8ca5c2b14a779af8ce4ffa3df667acfb9ac7ca81866069cd1e903d66368eb85f7e09325dd4c1c",
    "signer": "0x222534475146193b99B68F2E3830ED2b44307C2D",
    "userId": "991417453"
  }
}