{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5696",
    "entityType": "User",
    "nonce": "0x1e90a3dd62287d2930d2bbbbaf882ee709e91434e8d3ceb62ebeea630bf4a40b",
    "signature": "0x475bca237342476464f8e3ac4dbf41b4064ed99350888d6c4421c5b53b51958c0c3f6dde83aaad6f805317fc813486b152ee5ce2c6a5c007378b4a320c8c13f21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}