{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311257477",
    "entityType": "User",
    "nonce": "0x59e6eea5551fc767d50dbea70859acf678c251d0cb249ffcea9a1e8a75a7ccb8",
    "signature": "0x52a3f70f263a9b4da34b302b4dc10e7c500cbd399ffaa6ab1200e8ea52f39ad365112b2455458a0c19b4f323129aa71bfad586bf80b156751aa9606d926a09d51b",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}