{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428386",
    "entityType": "User",
    "nonce": "0xad1947ac602f9b56ed7ff702bdf0d24b52ca920dd98a0b8bc8279bd2bc43b51a",
    "signature": "0x1226fe9b51d52546997b13d0eb45d1b27e3beb8cf4089823c13f3f340551a04a2bb92d69c1af4523b7be10bbe21d257254a8aed3dfb35720837d979cddf5d3941b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}