{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50936",
    "entityType": "User",
    "nonce": "0x647be2dabf8f0e514167698f66faa0ef87e3eefd34afe4f7fd96505e4bd8b0f9",
    "signature": "0xca6a5fec0521129a2e1b3327b7d3ee946733c04dd2aa8d78abb77df55d548e0c614c76599f4d387f76226838b607606ffe3e61d70c1afee8a6c4254201cbaa4e1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}