{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcaa434c09b9e52f9a7816ee5a9f2556fe325f599a31e03b952d69d8092c8f2e6",
    "signature": "0xb02e3cf65342d29a7604f4eb306865ae8508c4b0823ce729988b3d75f9cd8b70316e1a52e6a34dc8a393b8bae5a6397663e6b1c870405611c4577a34652b0c1e1c",
    "signer": "0xdDEe2e444c4062ADe7ea600D234548C5A1e1C45C",
    "userId": "896536734"
  }
}