{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9c84336f33a16fbe4674627aa32a05e8485c6a0c6b5a3594d2b7cbdfa0d156e0",
    "signature": "0x85e4a673469c2b31f2bc8b6d15c9f61d769e2ea8441788c7512923b643e24646478a1459fa49d475d5b7477f78a872c1e37ba4d44b82e169eea609055defb91f1c",
    "signer": "0x14cDA8F8131D53967212dAa6A22F05936d974a8d",
    "userId": "66353412"
  }
}