{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987235245",
    "entityType": "User",
    "nonce": "0x155fe9ce31bd2bcd9f022a068339dfa2c7323635dafcef9931f19d19fd572168",
    "signature": "0x45e3a98b95fbcfc215b1102ab2dc97d266fffd300f8685a246a95fcd2e9378dd0dac8fa5b98954a179809ca96712644342f4cf9f7a63efa5d5cf6b226b25dd3c1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}