{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "484111371",
    "entityType": "User",
    "nonce": "0x6b87e7f6e592b4a6808261bd16d332ae10a97f6d218af241958aaa83e3d69720",
    "signature": "0x53b1b3a865243556f9b371e0dc57fff817d1fa016dad5f95ec21fc2091e54107150de0968a53466b1d304b118cbd9eb2c0879ed5299557ee59dbb25ffb75c4651b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}