{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb96e99d37c444a7d7aa981a968fc1f8ff18c5182720b5918fadea74bf3083958",
    "signature": "0xdbe296d1cfae8a7c2b4847cb7d9a2b0eae78298fd3f845c50076bc8c1e4463326f2ecdc523c52b527dbb8f0dca8224d31c546119256b063ac01d6b2ccf2529cf1c",
    "signer": "0x9eB1dbFA2902A49ae25C9d2A382F21689D363A92",
    "userId": "218303021"
  }
}