{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1873428",
    "entityType": "User",
    "nonce": "0x2b383d1c92d1514addf131ad7ab3a12b093409fda9551444af82f932cda1d598",
    "signature": "0x0811a6889d04de31669366e31480c10b50ba4eccf832b5434beec6a661bc776e3b960df3a1d1e0870790437bd96930efeedf5a8b7cd9b2f1a4d615d61df2d80a1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}