{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38909e27e9dad29564514ad0d27f850173fb59a5869c0df91666f6c5eb56a6ec",
    "signature": "0x074eb3786ceb9e680a36492618fd94955a629569ff593bff60a59c64d7a8a20e03139fa1dcaead8df29138f2f3af3ab9ac82703bdd0c5751cecea0106e3edfaf1c",
    "signer": "0xaa99e7F9F1b6e01554CB48264D6EF8093922AE7a",
    "userId": "661016944"
  }
}