{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18985",
    "entityType": "User",
    "nonce": "0x37b9bcd8bc2ea13b10553d77fbea7b422e978366e071c638dd08b67e5a1083bf",
    "signature": "0x7e3865416727bdbc6fdd540a7df995b4fc470a849de1132bc8a045e07357d9964291296fa21a1d213d4a2e208c9c8d5d59124ade30aab0aeaf667537540cdcdc1b",
    "signer": "0x606B9dD2CAdFd5EeB1Ca78C6ce4538ED4e7Df7E9",
    "userId": "54633718"
  }
}