{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a9a3eeb4753c47e60ca768028c6f4ad40ec5b3010499fb70c8fb21504563358",
    "signature": "0x39f372e84c6f62b64ef6390b704a8d91e6c1faac4887c057d7ee65ee6a3033f140a0add6e254223a259dd7af2185273f16301507fff907cb0fe75b80b2dbfe881b",
    "signer": "0x365A9e75cF83736DEAb62EB382A58de673338373",
    "userId": "865217398"
  }
}