{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75120",
    "entityType": "User",
    "nonce": "0x1edf9b20127f2a49f78d34f6de5cb4e87caee1567f2ea1501473dfa1fce89f01",
    "signature": "0xf89496ef839a4dbde4c15d36b8dd6f7606561807a4d091c50e59881f6deb28d828d9b11b37015b48c1d3b2e1fd364ae9aa8641463204ddac807d17069202db951c",
    "signer": "0xF6F9F433Ab5dDe3c96D63C2fFAa64b610599a410",
    "userId": "80682"
  }
}