{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xadb69b83a9b1654a0abdd1d254f7bea0bfb0ae67305a5b51968f5599652c6047",
    "signature": "0x7c3953cf5d0a90d9bb25cb292f8cd76d22bc652df988434c70150ce360b232ba3358794e1a50f94c51008d32541b17c0460e389963ff00f8149fc0ca4da5c7291c",
    "signer": "0x7D89eD1c2C9744b86AE1D1301E8F342289D2f3cB",
    "userId": "58600206"
  }
}