{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "209848",
    "entityType": "User",
    "nonce": "0x0a0784467c6d036b450cf4192b8fecc3c64e74c878d68b2a5d3ba98152d15f7a",
    "signature": "0xc43bbb1544983fce06ef585e3ebb3b990ac811745bf7d3e0b7c2aadb32a12a0c12993b7acca1d7b88f9db797e8f1556a8b512a1f67b926f8ee9375ee9c7290381b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}