{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe7030547f7d9e6a4b92332cbc3faafbc22e0da9255dce7cccfc6f49d01f4e12b",
    "signature": "0x9f0f4d176f954d998a0ecc427be8325e134753d156f8648274ab3fe8487cfbbd761f891e480a918f08233a8555b5580a919b2ebda2ecbe332dbb547b96b142231b",
    "signer": "0x2291c47919F744CdC633849921a372Bd3E2a439a",
    "userId": "199246851"
  }
}