{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9cfe0bb6363a72cecb2122166c25d29b5e8c1e73798b7bf2cb7e52559f98e952",
    "signature": "0xc62bd7b716c0a4b48078af4333761a8735754c7ba1fb5c5e9db126b2e32bc5db0c9a5d42973fd05020ad0b236bba8d10bb66a2ecd059216448557d67bb14d50f1b",
    "signer": "0x3Fa647464da7FB0f2B0b6f7f2b539Bf24AdAb791",
    "userId": "472758387"
  }
}