{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "758745",
    "entityType": "User",
    "nonce": "0x60c2bcd5e2491456cf02f994f3fc964222a7b94790ddec985e4dd7c86ac12e94",
    "signature": "0x85adbc1d588054ff10ccf8c357de17b55fa7ad5cd1e7c1d67f9534ed2b84a4b554ed4770fa61b0e70a4bfa52a0bca6073ac8520241c9133495adab09dbbc4b771b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}