{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x79ff978e9aa86d88ad128d078a9d584f996c7d6b8396b23ffe5c185b76c2bb98",
    "signature": "0x50690b85ef0eca0477cd7fb5db7931f11eef100e3d2620b24fd690182bf309fe5f57cf91473d3a88de687f928481754a7eb11aa0163a119179545d4dca3f45c11c",
    "signer": "0x60495664C60cF8427e991465f31ABe2F9dC345A5",
    "userId": "696978255"
  }
}