{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "183840",
    "entityType": "User",
    "nonce": "0x9706bd7205a85bea9c5c0edaee06d00208edbc470569b555690fcc00443b748a",
    "signature": "0x644cd8c3f715ea205d85c5bcaf6b2393a0fab4232b63859d7a0cdd392dbc1bee43c99c4f05100fc519b48c91ae3a2cf10c25b9b40d38ace07a018b9a1cc4d0eb1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}