{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "536142847",
    "entityType": "User",
    "nonce": "0x657e1ec570c69410a31da97a1c19e249fbb117b4043ba8e4179f0005e1d5c44a",
    "signature": "0x6f4cff2880462919c6be0bb8caf6499eaac845943b0ca16f460b2b4135296db61bcfffa2bc9bfb6df4217f69e0ab25014d27de0860734a1bcda804e0dd706a341b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}