{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd3cd8d3f49828b905a23bba936d457ca7ba8feed8155936e5d09ce2a881846ea",
    "signature": "0x84ca3e7c6dd50ad8d950a06658f575756606ea2878b34bc507fc1e64b97e28191018a9e3456af140bacdb94ef0b4eae8ca3824ab07d6104589d7c25c11bb669a1b",
    "signer": "0xAd9B89f62E9a3dE6998Db173cdb8454108cf562a",
    "userId": "223506066"
  }
}