{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9dc34aec3d269f720d12491d74d06af08c3c5ed6cb0c4ffde7449f3fe62a426a",
    "signature": "0xd873e63d9026eccc8d38a3cbf750bfb4414a6f4ed82ede3e82053d14d089d9cd75338e107267ec54605097230260e78924c2e1d2b13d745add1dfb6945cadcf21c",
    "signer": "0x9b591e6bE80B48E05B521591fD009a80055a916D",
    "userId": "209203079"
  }
}