{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x3e6729ba4b79866cf30d17a6731f3b7bb1a17ce41f102f5a57991cd5d802d109",
    "signature": "0x4bd5451ab1680eca4f7b3cd5e3358672f92c59404b08ea1d47414ea4b22e076e55ff1cb7aadc5bf6787ebb598d1a3126ad4f983dc28a49f06e2f544e125dec461c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}