{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13a32388899f520da99e670fbb672caf5e651689ca6f57641c8fe02a7b27c901",
    "signature": "0x6fa614e15398818e10b5a9a0b7b19f226763aa06615b5330c5927d6917a542fc1d66d05820198cc78d8ef74236b29ce87a34cdc73b8e6a03c4c4ca09d97e72011c",
    "signer": "0x94eeCD39f9959B67dAd8A04D0d80f0cAd18bC37B",
    "userId": "879778822"
  }
}