{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7e58a88aa4dcc1d6958fe8a81c1e3863a0edd03881aaec9a38f0cce2254ef347",
    "signature": "0xd9ae30eddfc3d046b2434c914699cfafb08c5c76270a89f4417ad8987be63b4a040d04b4a77301e963502b175dcef79c9eff8e9ee14986003e6c1db3974efbc41b",
    "signer": "0x977F3f101C3c926E8bfE22f6bb935AeC1C93c3ac",
    "userId": "648747566"
  }
}