{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1888709",
    "entityType": "User",
    "nonce": "0xea218f499978968f95e0a6256eaa05887fd75f097af4092c58b57c7ddf7398aa",
    "signature": "0xbe5c8ac5756761ca5425930c4f74100e8025ab4414d09ccbde5e6195d6795b077f496edf568b509ef60e85dd8e5736a0421d6068c533fa934248c37b86bfca7c1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}